From 0a1ff77f23f0fdbc569f6184bad74ae86cd45a2e Mon Sep 17 00:00:00 2001
From: syuilo <4439005+syuilo@users.noreply.github.com>
Date: Sun, 27 Apr 2025 19:55:56 +0900
Subject: [PATCH] perf(frontend): use css-native implementation for spacer
 rather than vue component

---
 .../src/components/MkAbuseReportWindow.vue    |  4 +-
 .../src/components/MkAntennaEditor.vue        |  4 +-
 .../MkCustomEmojiDetailedDialog.vue           |  4 +-
 .../components/MkFileCaptionEditWindow.vue    |  4 +-
 packages/frontend/src/components/MkFolder.vue |  4 +-
 .../src/components/MkForgotPassword.vue       |  4 +-
 .../frontend/src/components/MkFormDialog.vue  |  4 +-
 .../components/MkNotificationSelectWindow.vue |  4 +-
 .../frontend/src/components/MkPageWindow.vue  |  3 +-
 .../src/components/MkPasswordDialog.vue       |  4 +-
 .../components/MkRemoteEmojiEditDialog.vue    |  4 +-
 .../src/components/MkRoleSelectDialog.vue     |  5 +-
 .../src/components/MkSignupDialog.form.vue    |  4 +-
 .../src/components/MkSignupDialog.rules.vue   |  4 +-
 .../src/components/MkSystemWebhookEditor.vue  |  4 +-
 .../src/components/MkTokenGenerateWindow.vue  |  4 +-
 .../src/components/MkTutorialDialog.vue       | 28 ++++-----
 .../MkUserAnnouncementEditDialog.vue          |  4 +-
 .../src/components/MkUserSetupDialog.vue      | 26 ++++-----
 .../src/components/global/MkSpacer.vue        | 58 -------------------
 packages/frontend/src/components/index.ts     |  3 -
 packages/frontend/src/di.ts                   |  1 -
 packages/frontend/src/pages/about-misskey.vue |  4 +-
 packages/frontend/src/pages/about.vue         | 16 ++---
 packages/frontend/src/pages/achievements.vue  |  4 +-
 packages/frontend/src/pages/admin-file.vue    |  4 +-
 packages/frontend/src/pages/admin-user.vue    |  4 +-
 .../notification-recipient.editor.vue         |  4 +-
 .../abuse-report/notification-recipient.vue   |  4 +-
 packages/frontend/src/pages/admin/abuses.vue  |  4 +-
 packages/frontend/src/pages/admin/ads.vue     |  4 +-
 .../src/pages/admin/announcements.vue         |  4 +-
 .../frontend/src/pages/admin/branding.vue     |  8 +--
 .../custom-emojis-manager.local.list.logs.vue |  4 +-
 ...ustom-emojis-manager.local.list.search.vue |  4 +-
 .../admin/custom-emojis-manager.register.vue  |  4 +-
 .../frontend/src/pages/admin/database.vue     |  4 +-
 .../src/pages/admin/email-settings.vue        |  8 +--
 .../src/pages/admin/external-services.vue     |  4 +-
 .../src/pages/admin/federation-job-queue.vue  |  4 +-
 .../frontend/src/pages/admin/federation.vue   |  4 +-
 packages/frontend/src/pages/admin/files.vue   |  4 +-
 packages/frontend/src/pages/admin/index.vue   |  4 +-
 packages/frontend/src/pages/admin/invites.vue |  4 +-
 .../frontend/src/pages/admin/job-queue.vue    |  8 +--
 .../frontend/src/pages/admin/moderation.vue   |  4 +-
 packages/frontend/src/pages/admin/modlog.vue  |  4 +-
 .../src/pages/admin/object-storage.vue        |  8 +--
 .../frontend/src/pages/admin/overview.vue     |  4 +-
 .../frontend/src/pages/admin/performance.vue  |  4 +-
 packages/frontend/src/pages/admin/relays.vue  |  4 +-
 .../frontend/src/pages/admin/roles.edit.vue   |  8 +--
 .../frontend/src/pages/admin/roles.role.vue   |  4 +-
 packages/frontend/src/pages/admin/roles.vue   |  4 +-
 .../frontend/src/pages/admin/security.vue     |  4 +-
 .../frontend/src/pages/admin/server-rules.vue |  4 +-
 .../frontend/src/pages/admin/settings.vue     |  4 +-
 .../src/pages/admin/system-webhook.vue        |  4 +-
 packages/frontend/src/pages/admin/users.vue   |  4 +-
 packages/frontend/src/pages/ads.vue           |  4 +-
 packages/frontend/src/pages/announcement.vue  |  4 +-
 packages/frontend/src/pages/announcements.vue |  4 +-
 .../frontend/src/pages/antenna-timeline.vue   |  4 +-
 packages/frontend/src/pages/api-console.vue   |  4 +-
 packages/frontend/src/pages/auth.vue          |  4 +-
 .../pages/avatar-decoration-edit-dialog.vue   |  4 +-
 .../frontend/src/pages/avatar-decorations.vue |  4 +-
 .../frontend/src/pages/channel-editor.vue     |  4 +-
 packages/frontend/src/pages/channel.vue       |  8 +--
 packages/frontend/src/pages/channels.vue      |  4 +-
 packages/frontend/src/pages/chat/home.vue     |  4 +-
 packages/frontend/src/pages/chat/message.vue  |  4 +-
 packages/frontend/src/pages/chat/room.vue     | 16 ++---
 packages/frontend/src/pages/clicker.vue       |  4 +-
 packages/frontend/src/pages/clip.vue          |  4 +-
 packages/frontend/src/pages/contact.vue       |  4 +-
 .../src/pages/custom-emojis-manager.vue       |  4 +-
 packages/frontend/src/pages/drive.file.vue    |  8 +--
 .../src/pages/drop-and-fusion.game.vue        |  4 +-
 .../frontend/src/pages/drop-and-fusion.vue    |  4 +-
 .../frontend/src/pages/emoji-edit-dialog.vue  |  4 +-
 .../frontend/src/pages/explore.featured.vue   |  4 +-
 packages/frontend/src/pages/explore.roles.vue |  4 +-
 packages/frontend/src/pages/explore.users.vue |  4 +-
 packages/frontend/src/pages/favorites.vue     |  4 +-
 .../frontend/src/pages/flash/flash-edit.vue   |  8 +--
 .../frontend/src/pages/flash/flash-index.vue  |  4 +-
 packages/frontend/src/pages/flash/flash.vue   |  4 +-
 .../frontend/src/pages/follow-requests.vue    |  4 +-
 packages/frontend/src/pages/gallery/edit.vue  |  4 +-
 packages/frontend/src/pages/gallery/index.vue |  4 +-
 packages/frontend/src/pages/gallery/post.vue  |  4 +-
 packages/frontend/src/pages/games.vue         |  4 +-
 .../frontend/src/pages/install-extensions.vue |  4 +-
 packages/frontend/src/pages/instance-info.vue |  4 +-
 packages/frontend/src/pages/invite.vue        |  8 +--
 packages/frontend/src/pages/list.vue          |  8 +--
 packages/frontend/src/pages/lookup.vue        |  4 +-
 .../frontend/src/pages/my-antennas/index.vue  |  4 +-
 .../frontend/src/pages/my-clips/index.vue     |  4 +-
 .../frontend/src/pages/my-lists/index.vue     |  4 +-
 packages/frontend/src/pages/my-lists/list.vue |  4 +-
 packages/frontend/src/pages/note.vue          |  4 +-
 packages/frontend/src/pages/notifications.vue |  4 +-
 .../src/pages/page-editor/page-editor.vue     |  4 +-
 packages/frontend/src/pages/page.vue          |  4 +-
 packages/frontend/src/pages/pages.vue         |  4 +-
 packages/frontend/src/pages/registry.keys.vue |  4 +-
 .../frontend/src/pages/registry.value.vue     |  4 +-
 packages/frontend/src/pages/registry.vue      |  4 +-
 .../frontend/src/pages/reset-password.vue     |  4 +-
 .../frontend/src/pages/reversi/game.board.vue |  4 +-
 .../src/pages/reversi/game.setting.vue        |  8 +--
 packages/frontend/src/pages/reversi/index.vue |  8 +--
 packages/frontend/src/pages/role.vue          | 12 ++--
 packages/frontend/src/pages/scratchpad.vue    |  4 +-
 packages/frontend/src/pages/search.vue        |  8 +--
 .../src/pages/settings/2fa.qrdialog.vue       | 12 ++--
 .../settings/avatar-decoration.dialog.vue     |  4 +-
 .../frontend/src/pages/settings/index.vue     |  4 +-
 packages/frontend/src/pages/share.vue         |  4 +-
 packages/frontend/src/pages/tag.vue           |  8 +--
 packages/frontend/src/pages/theme-editor.vue  |  4 +-
 packages/frontend/src/pages/timeline.vue      |  4 +-
 .../frontend/src/pages/user-list-timeline.vue |  4 +-
 packages/frontend/src/pages/user-tag.vue      |  4 +-
 .../frontend/src/pages/user/achievements.vue  |  4 +-
 packages/frontend/src/pages/user/activity.vue |  4 +-
 packages/frontend/src/pages/user/clips.vue    |  4 +-
 packages/frontend/src/pages/user/files.vue    |  4 +-
 packages/frontend/src/pages/user/flashs.vue   |  4 +-
 .../frontend/src/pages/user/followers.vue     |  4 +-
 .../frontend/src/pages/user/following.vue     |  4 +-
 packages/frontend/src/pages/user/gallery.vue  |  4 +-
 packages/frontend/src/pages/user/home.vue     |  4 +-
 packages/frontend/src/pages/user/index.vue    |  4 +-
 packages/frontend/src/pages/user/lists.vue    |  5 +-
 packages/frontend/src/pages/user/pages.vue    |  4 +-
 packages/frontend/src/pages/user/raw.vue      |  4 +-
 .../frontend/src/pages/user/reactions.vue     |  4 +-
 packages/frontend/src/style.scss              | 24 ++++++++
 packages/frontend/src/ui/deck/column.vue      |  2 +-
 packages/frontend/src/ui/universal.vue        |  2 +-
 143 files changed, 370 insertions(+), 411 deletions(-)
 delete mode 100644 packages/frontend/src/components/global/MkSpacer.vue

diff --git a/packages/frontend/src/components/MkAbuseReportWindow.vue b/packages/frontend/src/components/MkAbuseReportWindow.vue
index dbac5e9dd7..61297fdc76 100644
--- a/packages/frontend/src/components/MkAbuseReportWindow.vue
+++ b/packages/frontend/src/components/MkAbuseReportWindow.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</template>
 		</I18n>
 	</template>
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<div class="_gaps_m" :class="$style.root">
 			<div class="">
 				<MkTextarea v-model="comment">
@@ -25,7 +25,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton primary full :disabled="comment.length === 0" @click="send">{{ i18n.ts.send }}</MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </MkWindow>
 </template>
 
diff --git a/packages/frontend/src/components/MkAntennaEditor.vue b/packages/frontend/src/components/MkAntennaEditor.vue
index 59099d54bd..e2febf7225 100644
--- a/packages/frontend/src/components/MkAntennaEditor.vue
+++ b/packages/frontend/src/components/MkAntennaEditor.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<div>
 		<div class="_gaps_m">
 			<MkInput v-model="name">
@@ -48,7 +48,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 		</div>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/components/MkCustomEmojiDetailedDialog.vue b/packages/frontend/src/components/MkCustomEmojiDetailedDialog.vue
index 54fda6bf7c..ed5a20b4eb 100644
--- a/packages/frontend/src/components/MkCustomEmojiDetailedDialog.vue
+++ b/packages/frontend/src/components/MkCustomEmojiDetailedDialog.vue
@@ -7,7 +7,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <MkModalWindow ref="dialogEl" @close="cancel()" @closed="emit('closed')">
 	<template #header>:{{ emoji.name }}:</template>
 	<template #default>
-		<MkSpacer>
+		<div class="_spacer">
 			<div style="display: flex; flex-direction: column; gap: 1em;">
 				<div :class="$style.emojiImgWrapper">
 					<MkCustomEmoji :name="emoji.name" :normal="true" :useOriginalSize="true" style="height: 100%;"></MkCustomEmoji>
@@ -50,7 +50,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					</template>
 				</MkKeyValue>
 			</div>
-		</MkSpacer>
+		</div>
 	</template>
 </MkModalWindow>
 </template>
diff --git a/packages/frontend/src/components/MkFileCaptionEditWindow.vue b/packages/frontend/src/components/MkFileCaptionEditWindow.vue
index 120d5355b2..c9b08b616c 100644
--- a/packages/frontend/src/components/MkFileCaptionEditWindow.vue
+++ b/packages/frontend/src/components/MkFileCaptionEditWindow.vue
@@ -15,12 +15,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 	@closed="emit('closed')"
 >
 	<template #header>{{ i18n.ts.describeFile }}</template>
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<MkDriveFileThumbnail :file="file" fit="contain" style="height: 100px; margin-bottom: 16px;"/>
 		<MkTextarea v-model="caption" autofocus :placeholder="i18n.ts.inputNewDescription">
 			<template #label>{{ i18n.ts.caption }}</template>
 		</MkTextarea>
-	</MkSpacer>
+	</div>
 </MkModalWindow>
 </template>
 
diff --git a/packages/frontend/src/components/MkFolder.vue b/packages/frontend/src/components/MkFolder.vue
index 81689397cc..2f42403613 100644
--- a/packages/frontend/src/components/MkFolder.vue
+++ b/packages/frontend/src/components/MkFolder.vue
@@ -45,9 +45,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 								</div>
 							</template>
 
-							<MkSpacer v-if="withSpacer" :marginMin="spacerMin" :marginMax="spacerMax">
+							<div v-if="withSpacer" class="_spacer" :style="{ '--MI_SPACER-min': props.spacerMin + 'px', '--MI_SPACER-max': props.spacerMax + 'px' }">
 								<slot></slot>
-							</MkSpacer>
+							</div>
 							<div v-else>
 								<slot></slot>
 							</div>
diff --git a/packages/frontend/src/components/MkForgotPassword.vue b/packages/frontend/src/components/MkForgotPassword.vue
index 35112ad45d..57946aaf2b 100644
--- a/packages/frontend/src/components/MkForgotPassword.vue
+++ b/packages/frontend/src/components/MkForgotPassword.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 >
 	<template #header>{{ i18n.ts.forgotPassword }}</template>
 
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<form v-if="instance.enableEmail" @submit.prevent="onSubmit">
 			<div class="_gaps_m">
 				<MkInput v-model="username" type="text" pattern="^[a-zA-Z0-9_]+$" :spellcheck="false" autofocus required>
@@ -34,7 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div v-else>
 			{{ i18n.ts._forgotPassword.contactAdmin }}
 		</div>
-	</MkSpacer>
+	</div>
 </MkModalWindow>
 </template>
 
diff --git a/packages/frontend/src/components/MkFormDialog.vue b/packages/frontend/src/components/MkFormDialog.vue
index 4756079e76..0884cdc016 100644
--- a/packages/frontend/src/components/MkFormDialog.vue
+++ b/packages/frontend/src/components/MkFormDialog.vue
@@ -19,7 +19,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		{{ title }}
 	</template>
 
-	<MkSpacer :marginMin="20" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 32px;">
 		<div v-if="Object.keys(form).filter(item => !form[item].hidden).length > 0" class="_gaps_m">
 			<template v-for="(v, k) in Object.fromEntries(Object.entries(form))">
 				<template v-if="typeof v.hidden == 'function' ? v.hidden(values) : v.hidden"></template>
@@ -66,7 +66,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<img :src="infoImageUrl" draggable="false"/>
 			<div>{{ i18n.ts.nothing }}</div>
 		</div>
-	</MkSpacer>
+	</div>
 </MkModalWindow>
 </template>
 
diff --git a/packages/frontend/src/components/MkNotificationSelectWindow.vue b/packages/frontend/src/components/MkNotificationSelectWindow.vue
index d074dceb2f..bb01a008bd 100644
--- a/packages/frontend/src/components/MkNotificationSelectWindow.vue
+++ b/packages/frontend/src/components/MkNotificationSelectWindow.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 >
 	<template #header>{{ i18n.ts.notificationSetting }}</template>
 
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<div class="_gaps_m">
 			<MkInfo>{{ i18n.ts.notificationSettingDesc }}</MkInfo>
 			<div class="_buttons">
@@ -25,7 +25,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 			<MkSwitch v-for="ntype in notificationTypes" :key="ntype" v-model="typesMap[ntype].value">{{ i18n.ts._notification._types[ntype] }}</MkSwitch>
 		</div>
-	</MkSpacer>
+	</div>
 </MkModalWindow>
 </template>
 
diff --git a/packages/frontend/src/components/MkPageWindow.vue b/packages/frontend/src/components/MkPageWindow.vue
index 32c2e48b01..1310ea6a77 100644
--- a/packages/frontend/src/components/MkPageWindow.vue
+++ b/packages/frontend/src/components/MkPageWindow.vue
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</template>
 	</template>
 
-	<div :class="$style.root">
+	<div :class="$style.root" class="_forceShrinkSpacer">
 		<StackingRouterView v-if="prefer.s['experimental.stackingRouterView']" :key="reloadCount" :router="windowRouter"/>
 		<RouterView v-else :key="reloadCount" :router="windowRouter"/>
 	</div>
@@ -125,7 +125,6 @@ provideMetadataReceiver((metadataGetter) => {
 provideReactiveMetadata(pageMetadata);
 provide('shouldOmitHeaderTitle', true);
 provide('shouldHeaderThin', true);
-provide(DI.forceSpacerMin, true);
 
 const contextmenu = computed(() => ([{
 	icon: 'ti ti-player-eject',
diff --git a/packages/frontend/src/components/MkPasswordDialog.vue b/packages/frontend/src/components/MkPasswordDialog.vue
index 2abf8669ed..826081ffe5 100644
--- a/packages/frontend/src/components/MkPasswordDialog.vue
+++ b/packages/frontend/src/components/MkPasswordDialog.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 >
 	<template #header>{{ i18n.ts.authentication }}</template>
 
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<div style="padding: 0 0 16px 0; text-align: center;">
 			<img src="/client-assets/locked_with_key_3d.png" alt="🔐" style="display: block; margin: 0 auto; width: 48px;">
 			<div style="margin-top: 16px;">{{ i18n.ts.authenticationRequiredToContinue }}</div>
@@ -34,7 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton :disabled="(password ?? '') == '' || ($i.twoFactorEnabled && (token ?? '') == '')" type="submit" primary rounded style="margin: 0 auto;"><i class="ti ti-lock-open"></i> {{ i18n.ts.continue }}</MkButton>
 			</div>
 		</form>
-	</MkSpacer>
+	</div>
 </MkModalWindow>
 </template>
 
diff --git a/packages/frontend/src/components/MkRemoteEmojiEditDialog.vue b/packages/frontend/src/components/MkRemoteEmojiEditDialog.vue
index dc9bacf481..9e61a80827 100644
--- a/packages/frontend/src/components/MkRemoteEmojiEditDialog.vue
+++ b/packages/frontend/src/components/MkRemoteEmojiEditDialog.vue
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template #header>:{{ name }}:</template>
 
 	<div style="display: flex; flex-direction: column; min-height: 100%;">
-		<MkSpacer :marginMin="20" :marginMax="28" style="flex-grow: 1;">
+		<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px; flex-grow: 1px;">
 			<div class="_gaps_m">
 				<div v-if="imgUrl != null" :class="$style.imgs">
 					<div style="background: #000;" :class="$style.imgContainer">
@@ -45,7 +45,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<template #value>{{ license }}</template>
 				</MkKeyValue>
 			</div>
-		</MkSpacer>
+		</div>
 		<div :class="$style.footer">
 			<MkButton primary rounded style="margin: 0 auto;" @click="done">
 				<i class="ti ti-plus"></i> {{ i18n.ts.import }}
diff --git a/packages/frontend/src/components/MkRoleSelectDialog.vue b/packages/frontend/src/components/MkRoleSelectDialog.vue
index fd56e4902c..6888824437 100644
--- a/packages/frontend/src/components/MkRoleSelectDialog.vue
+++ b/packages/frontend/src/components/MkRoleSelectDialog.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	@closed="emit('closed')"
 >
 	<template #header>{{ title }}</template>
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<MkLoading v-if="fetching"/>
 		<div v-else class="_gaps" :class="$style.root">
 			<div :class="$style.header">
@@ -38,7 +38,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton @click="onCancelClicked">{{ i18n.ts.cancel }}</MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </MkModalWindow>
 </template>
 
@@ -51,7 +51,6 @@ import MkInfo from '@/components/MkInfo.vue';
 import MkRolePreview from '@/components/MkRolePreview.vue';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import * as os from '@/os.js';
-import MkSpacer from '@/components/global/MkSpacer.vue';
 import MkModalWindow from '@/components/MkModalWindow.vue';
 import MkLoading from '@/components/global/MkLoading.vue';
 
diff --git a/packages/frontend/src/components/MkSignupDialog.form.vue b/packages/frontend/src/components/MkSignupDialog.form.vue
index 65b879235f..aebec7a8f6 100644
--- a/packages/frontend/src/components/MkSignupDialog.form.vue
+++ b/packages/frontend/src/components/MkSignupDialog.form.vue
@@ -8,7 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div :class="$style.banner">
 		<i class="ti ti-user-edit"></i>
 	</div>
-	<MkSpacer :marginMin="20" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 32px;">
 		<form class="_gaps_m" autocomplete="new-password" @submit.prevent="onSubmit">
 			<MkInput v-if="instance.disableRegistration" v-model="invitationCode" type="text" :spellcheck="false" required>
 				<template #label>{{ i18n.ts.invitationCode }}</template>
@@ -74,7 +74,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<template v-else>{{ i18n.ts.start }}</template>
 			</MkButton>
 		</form>
-	</MkSpacer>
+	</div>
 </div>
 </template>
 
diff --git a/packages/frontend/src/components/MkSignupDialog.rules.vue b/packages/frontend/src/components/MkSignupDialog.rules.vue
index 999e843325..0ba3ac3615 100644
--- a/packages/frontend/src/components/MkSignupDialog.rules.vue
+++ b/packages/frontend/src/components/MkSignupDialog.rules.vue
@@ -8,7 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div :class="$style.banner">
 		<i class="ti ti-checklist"></i>
 	</div>
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<div class="_gaps_m">
 			<div v-if="instance.disableRegistration || instance.federation !== 'all'" class="_gaps_s">
 				<MkInfo v-if="instance.disableRegistration" warn>{{ i18n.ts.invitationRequiredToRegister }}</MkInfo>
@@ -59,7 +59,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton inline primary rounded gradate :disabled="!agreed" data-cy-signup-rules-continue @click="emit('done')">{{ i18n.ts.continue }} <i class="ti ti-arrow-right"></i></MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </div>
 </template>
 
diff --git a/packages/frontend/src/components/MkSystemWebhookEditor.vue b/packages/frontend/src/components/MkSystemWebhookEditor.vue
index 86e755a3c3..b27559a5ce 100644
--- a/packages/frontend/src/components/MkSystemWebhookEditor.vue
+++ b/packages/frontend/src/components/MkSystemWebhookEditor.vue
@@ -20,7 +20,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</template>
 
 	<div style="display: flex; flex-direction: column; min-height: 100%;">
-		<MkSpacer :marginMin="20" :marginMax="28" style="flex-grow: 1;">
+		<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" style="flex-grow: 1px;;">
 			<MkLoading v-if="loading !== 0"/>
 			<div v-else :class="$style.root" class="_gaps_m">
 				<MkInput v-model="title">
@@ -79,7 +79,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<template #label>{{ i18n.ts.enable }}</template>
 				</MkSwitch>
 			</div>
-		</MkSpacer>
+		</div>
 		<div :class="$style.footer" class="_buttonsCenter">
 			<MkButton primary rounded :disabled="disableSubmitButton" @click="onSubmitClicked">
 				<i class="ti ti-check"></i>
diff --git a/packages/frontend/src/components/MkTokenGenerateWindow.vue b/packages/frontend/src/components/MkTokenGenerateWindow.vue
index b449155edb..42cb6f1e82 100644
--- a/packages/frontend/src/components/MkTokenGenerateWindow.vue
+++ b/packages/frontend/src/components/MkTokenGenerateWindow.vue
@@ -17,7 +17,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 >
 	<template #header>{{ title || i18n.ts.generateAccessToken }}</template>
 
-	<MkSpacer :marginMin="20" :marginMax="28">
+	<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 		<div class="_gaps_m">
 			<div v-if="information">
 				<MkInfo warn>{{ information }}</MkInfo>
@@ -42,7 +42,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </MkModalWindow>
 </template>
 
diff --git a/packages/frontend/src/components/MkTutorialDialog.vue b/packages/frontend/src/components/MkTutorialDialog.vue
index 92f71b01af..0797dfafac 100644
--- a/packages/frontend/src/components/MkTutorialDialog.vue
+++ b/packages/frontend/src/components/MkTutorialDialog.vue
@@ -29,7 +29,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-if="page === 0">
 				<div :class="$style.centerPage">
 					<MkAnimBg style="position: absolute; top: 0;" :scale="1.5"/>
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps" style="text-align: center;">
 							<i class="ti ti-confetti" style="display: block; margin: auto; font-size: 3em; color: var(--MI_THEME-accent);"></i>
 							<div style="font-size: 120%;">{{ i18n.ts._initialTutorial._landing.title }}</div>
@@ -37,15 +37,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkButton primary rounded gradate style="margin: 16px auto 0 auto;" @click="page++">{{ i18n.ts._initialTutorial.launchTutorial }} <i class="ti ti-arrow-right"></i></MkButton>
 							<MkButton style="margin: 0 auto;" transparent rounded @click="close(true)">{{ i18n.ts.close }}</MkButton>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 			<template v-else-if="page === 1">
 				<div style="height: 100cqh; overflow: auto;">
 					<div :class="$style.pageRoot">
-						<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" :class="$style.pageMainpx;">
 							<XNote phase="aboutNote"/>
-						</MkSpacer>
+						</div>
 						<div :class="$style.pageFooter">
 							<div class="_buttonsCenter">
 								<MkButton v-if="initialPage !== 1" rounded @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -58,12 +58,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-else-if="page === 2">
 				<div style="height: 100cqh; overflow: auto;">
 					<div :class="$style.pageRoot">
-						<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" :class="$style.pageMainpx;">
 							<div class="_gaps">
 								<XNote phase="howToReact" @reacted="isReactionTutorialPushed = true"/>
 								<div v-if="!isReactionTutorialPushed">{{ i18n.ts._initialTutorial._reaction.reactToContinue }}</div>
 							</div>
-						</MkSpacer>
+						</div>
 						<div :class="$style.pageFooter">
 							<div class="_buttonsCenter">
 								<MkButton v-if="initialPage !== 2" rounded @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -76,9 +76,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-else-if="page === 3">
 				<div style="height: 100cqh; overflow: auto;">
 					<div :class="$style.pageRoot">
-						<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" :class="$style.pageMainpx;">
 							<XTimeline/>
-						</MkSpacer>
+						</div>
 						<div :class="$style.pageFooter">
 							<div class="_buttonsCenter">
 								<MkButton v-if="initialPage !== 3" rounded @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -91,9 +91,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-else-if="page === 4">
 				<div style="height: 100cqh; overflow: auto;">
 					<div :class="$style.pageRoot">
-						<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" :class="$style.pageMainpx;">
 							<XPostNote/>
-						</MkSpacer>
+						</div>
 						<div :class="$style.pageFooter">
 							<div class="_buttonsCenter">
 								<MkButton v-if="initialPage !== 3" rounded @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -106,12 +106,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-else-if="page === 5">
 				<div style="height: 100cqh; overflow: auto;">
 					<div :class="$style.pageRoot">
-						<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" :class="$style.pageMainpx;">
 							<div class="_gaps">
 								<XSensitive @succeeded="isSensitiveTutorialSucceeded = true"/>
 								<div v-if="!isSensitiveTutorialSucceeded">{{ i18n.ts._initialTutorial._howToMakeAttachmentsSensitive.doItToContinue }}</div>
 							</div>
-						</MkSpacer>
+						</div>
 						<div :class="$style.pageFooter">
 							<div class="_buttonsCenter">
 								<MkButton v-if="initialPage !== 2" rounded @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -124,7 +124,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-else-if="page === 6">
 				<div :class="$style.centerPage">
 					<MkAnimBg style="position: absolute; top: 0;" :scale="1.5"/>
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps" style="text-align: center;">
 							<i class="ti ti-check" style="display: block; margin: auto; font-size: 3em; color: var(--MI_THEME-accent);"></i>
 							<div style="font-size: 120%;">{{ i18n.ts._initialTutorial._done.title }}</div>
@@ -139,7 +139,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 								<MkButton rounded primary gradate @click="close(false)">{{ i18n.ts.close }}</MkButton>
 							</div>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 		</Transition>
diff --git a/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue b/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue
index 34e86444ad..aaefa5036a 100644
--- a/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue
+++ b/packages/frontend/src/components/MkUserAnnouncementEditDialog.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template v-else #header>New announcement</template>
 
 	<div>
-		<MkSpacer :marginMin="20" :marginMax="28">
+		<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 			<div class="_gaps_m">
 				<MkInput v-model="title">
 					<template #label>{{ i18n.ts.title }}</template>
@@ -41,7 +41,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkSwitch>
 				<MkButton v-if="announcement" danger @click="del()"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
 			</div>
-		</MkSpacer>
+		</div>
 		<div :class="$style.footer">
 			<MkButton primary rounded style="margin: 0 auto;" @click="done"><i class="ti ti-check"></i> {{ props.announcement ? i18n.ts.update : i18n.ts.create }}</MkButton>
 		</div>
diff --git a/packages/frontend/src/components/MkUserSetupDialog.vue b/packages/frontend/src/components/MkUserSetupDialog.vue
index 767f5c591a..53ab557fed 100644
--- a/packages/frontend/src/components/MkUserSetupDialog.vue
+++ b/packages/frontend/src/components/MkUserSetupDialog.vue
@@ -33,7 +33,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-if="page === 0">
 				<div :class="$style.centerPage">
 					<MkAnimBg style="position: absolute; top: 0;" :scale="1.5"/>
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps" style="text-align: center;">
 							<i class="ti ti-confetti" style="display: block; margin: auto; font-size: 3em; color: var(--MI_THEME-accent);"></i>
 							<div style="font-size: 120%;">{{ i18n.ts._initialAccountSetting.accountCreated }}</div>
@@ -41,15 +41,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkButton primary rounded gradate style="margin: 16px auto 0 auto;" data-cy-user-setup-continue @click="page++">{{ i18n.ts._initialAccountSetting.profileSetting }} <i class="ti ti-arrow-right"></i></MkButton>
 							<MkButton style="margin: 0 auto;" transparent rounded @click="later(true)">{{ i18n.ts.later }}</MkButton>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 			<template v-else-if="page === 1">
 				<div style="height: 100cqh; overflow: auto;">
 					<div :class="$style.pageRoot">
-						<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" :class="$style.pageMainpx;">
 							<XProfile/>
-						</MkSpacer>
+						</div>
 						<div :class="$style.pageFooter">
 							<div class="_buttonsCenter">
 								<MkButton rounded data-cy-user-setup-back @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -62,9 +62,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template v-else-if="page === 2">
 				<div style="height: 100cqh; overflow: auto;">
 					<div :class="$style.pageRoot">
-						<MkSpacer :marginMin="20" :marginMax="28" :class="$style.pageMain">
+						<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" :class="$style.pageMainpx;">
 							<XPrivacy/>
-						</MkSpacer>
+						</div>
 						<div :class="$style.pageFooter">
 							<div class="_buttonsCenter">
 								<MkButton rounded data-cy-user-setup-back @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -76,9 +76,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</template>
 			<template v-else-if="page === 3">
 				<div style="height: 100cqh; overflow: auto;">
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<XFollow/>
-					</MkSpacer>
+					</div>
 					<div :class="$style.pageFooter">
 						<div class="_buttonsCenter">
 							<MkButton rounded data-cy-user-setup-back @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
@@ -89,7 +89,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</template>
 			<template v-else-if="page === 4">
 				<div :class="$style.centerPage">
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps" style="text-align: center;">
 							<i class="ti ti-bell-ringing-2" style="display: block; margin: auto; font-size: 3em; color: var(--MI_THEME-accent);"></i>
 							<div style="font-size: 120%;">{{ i18n.ts.pushNotification }}</div>
@@ -100,13 +100,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 								<MkButton primary rounded gradate data-cy-user-setup-continue @click="page++">{{ i18n.ts.continue }} <i class="ti ti-arrow-right"></i></MkButton>
 							</div>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 			<template v-else-if="page === 5">
 				<div :class="$style.centerPage">
 					<MkAnimBg style="position: absolute; top: 0;" :scale="1.5"/>
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps" style="text-align: center;">
 							<i class="ti ti-check" style="display: block; margin: auto; font-size: 3em; color: var(--MI_THEME-accent);"></i>
 							<div style="font-size: 120%;">{{ i18n.ts._initialAccountSetting.initialAccountSettingCompleted }}</div>
@@ -119,7 +119,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 								<MkButton rounded primary data-cy-user-setup-continue @click="setupComplete()">{{ i18n.ts.close }}</MkButton>
 							</div>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 		</Transition>
@@ -147,7 +147,7 @@ const emit = defineEmits<{
 }>();
 
 const dialog = useTemplateRef('dialog');
- 
+
 const page = ref(store.s.accountSetupWizard);
 
 watch(page, () => {
diff --git a/packages/frontend/src/components/global/MkSpacer.vue b/packages/frontend/src/components/global/MkSpacer.vue
deleted file mode 100644
index c3bc37cb92..0000000000
--- a/packages/frontend/src/components/global/MkSpacer.vue
+++ /dev/null
@@ -1,58 +0,0 @@
-<!--
-SPDX-FileCopyrightText: syuilo and misskey-project
-SPDX-License-Identifier: AGPL-3.0-only
--->
-
-<template>
-<div :class="[$style.root, { [$style.rootMin]: forceSpacerMin }]">
-	<div :class="$style.content">
-		<slot></slot>
-	</div>
-</div>
-</template>
-
-<script lang="ts" setup>
-import { inject } from 'vue';
-import { deviceKind } from '@/utility/device-kind.js';
-import { DI } from '@/di.js';
-
-const props = withDefaults(defineProps<{
-	contentMax?: number | null;
-	marginMin?: number;
-	marginMax?: number;
-}>(), {
-	contentMax: null,
-	marginMin: 12,
-	marginMax: 24,
-});
-
-const forceSpacerMin = inject(DI.forceSpacerMin, false) || deviceKind === 'smartphone';
-</script>
-
-<style lang="scss" module>
-.root {
-	box-sizing: border-box;
-	width: 100%;
-}
-.rootMin {
-	padding: v-bind('props.marginMin + "px"') !important;
-}
-
-.content {
-	margin: 0 auto;
-	max-width: v-bind('props.contentMax + "px"');
-	container-type: inline-size;
-}
-
-@container (max-width: 450px) {
-	.root {
-		padding: v-bind('props.marginMin + "px"');
-	}
-}
-
-@container (min-width: 451px) {
-	.root {
-		padding: v-bind('props.marginMax + "px"');
-	}
-}
-</style>
diff --git a/packages/frontend/src/components/index.ts b/packages/frontend/src/components/index.ts
index 34cf598b84..ec6ea7c569 100644
--- a/packages/frontend/src/components/index.ts
+++ b/packages/frontend/src/components/index.ts
@@ -22,7 +22,6 @@ import MkLoading from './global/MkLoading.vue';
 import MkError from './global/MkError.vue';
 import MkAd from './global/MkAd.vue';
 import MkPageHeader from './global/MkPageHeader.vue';
-import MkSpacer from './global/MkSpacer.vue';
 import MkStickyContainer from './global/MkStickyContainer.vue';
 import MkLazy from './global/MkLazy.vue';
 import PageWithHeader from './global/PageWithHeader.vue';
@@ -60,7 +59,6 @@ export const components = {
 	MkError: MkError,
 	MkAd: MkAd,
 	MkPageHeader: MkPageHeader,
-	MkSpacer: MkSpacer,
 	MkStickyContainer: MkStickyContainer,
 	MkLazy: MkLazy,
 	PageWithHeader: PageWithHeader,
@@ -92,7 +90,6 @@ declare module '@vue/runtime-core' {
 		MkError: typeof MkError;
 		MkAd: typeof MkAd;
 		MkPageHeader: typeof MkPageHeader;
-		MkSpacer: typeof MkSpacer;
 		MkStickyContainer: typeof MkStickyContainer;
 		MkLazy: typeof MkLazy;
 		PageWithHeader: typeof PageWithHeader;
diff --git a/packages/frontend/src/di.ts b/packages/frontend/src/di.ts
index 58a2cce207..e2590da60b 100644
--- a/packages/frontend/src/di.ts
+++ b/packages/frontend/src/di.ts
@@ -17,5 +17,4 @@ export const DI = {
 	mfmEmojiReactCallback: Symbol() as InjectionKey<(emoji: string) => void>,
 	inModal: Symbol() as InjectionKey<boolean>,
 	inAppSearchMarkerId: Symbol() as InjectionKey<Ref<string | null>>,
-	forceSpacerMin: Symbol() as InjectionKey<boolean>,
 };
diff --git a/packages/frontend/src/pages/about-misskey.vue b/packages/frontend/src/pages/about-misskey.vue
index 481088fc30..7605ceba30 100644
--- a/packages/frontend/src/pages/about-misskey.vue
+++ b/packages/frontend/src/pages/about-misskey.vue
@@ -6,7 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
 	<div style="overflow: clip;">
-		<MkSpacer :contentMax="600" :marginMin="20">
+		<div class="_spacer" style="--MI_SPACER-w: 600" :marginMin="20px;">
 			<div class="_gaps_m znqjceqz">
 				<div v-panel class="about">
 					<div ref="containerEl" class="container" :class="{ playing: easterEggEngine != null }">
@@ -127,7 +127,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<p>{{ i18n.ts._aboutMisskey.morePatrons }}</p>
 				</FormSection>
 			</div>
-		</MkSpacer>
+		</div>
 	</div>
 </PageWithHeader>
 </template>
diff --git a/packages/frontend/src/pages/about.vue b/packages/frontend/src/pages/about.vue
index b4ccd55452..0edf2db1eb 100644
--- a/packages/frontend/src/pages/about.vue
+++ b/packages/frontend/src/pages/about.vue
@@ -5,18 +5,18 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer v-if="tab === 'overview'" :contentMax="600" :marginMin="20">
+	<div v-if="tab === 'overview'" class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 20px;">
 		<XOverview/>
-	</MkSpacer>
-	<MkSpacer v-else-if="tab === 'emojis'" :contentMax="1000" :marginMin="20">
+	</div>
+	<div v-else-if="tab === 'emojis'" class="_spacer" style="--MI_SPACER-w: 1000px; --MI_SPACER-min: 20px;">
 		<XEmojis/>
-	</MkSpacer>
-	<MkSpacer v-else-if="instance.federation !== 'none' && tab === 'federation'" :contentMax="1000" :marginMin="20">
+	</div>
+	<div v-else-if="instance.federation !== 'none' && tab === 'federation'" class="_spacer" style="--MI_SPACER-w: 1000px; --MI_SPACER-min: 20px;">
 		<XFederation/>
-	</MkSpacer>
-	<MkSpacer v-else-if="tab === 'charts'" :contentMax="1000" :marginMin="20">
+	</div>
+	<div v-else-if="tab === 'charts'" class="_spacer" style="--MI_SPACER-w: 1000px; --MI_SPACER-min: 20px;">
 		<MkInstanceStats/>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/achievements.vue b/packages/frontend/src/pages/achievements.vue
index 423e709da4..1560403b70 100644
--- a/packages/frontend/src/pages/achievements.vue
+++ b/packages/frontend/src/pages/achievements.vue
@@ -5,9 +5,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="1200">
+	<div class="_spacer" style="--MI_SPACER-w: 1200px;">
 		<MkAchievements :user="$i"/>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin-file.vue b/packages/frontend/src/pages/admin-file.vue
index 1e3e106842..8495642a8c 100644
--- a/packages/frontend/src/pages/admin-file.vue
+++ b/packages/frontend/src/pages/admin-file.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer v-if="file" :contentMax="600" :marginMin="16" :marginMax="32">
+	<div v-if="file" class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div v-if="tab === 'overview'" class="cxqhhsmd _gaps_m">
 			<a class="thumbnail" :href="file.url" target="_blank">
 				<MkDriveFileThumbnail class="thumbnail" :file="file" fit="contain"/>
@@ -65,7 +65,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkObjectView v-if="info" tall :value="info">
 			</MkObjectView>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin-user.vue b/packages/frontend/src/pages/admin-user.vue
index 9d92ccda60..15cd219834 100644
--- a/packages/frontend/src/pages/admin-user.vue
+++ b/packages/frontend/src/pages/admin-user.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="600" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense :p="init">
 			<div v-if="tab === 'overview'" class="_gaps_m">
 				<div class="aeakzknw">
@@ -206,7 +206,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkObjectView>
 			</div>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue
index 10925fa4ab..e81de8c9e7 100644
--- a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue
+++ b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.editor.vue
@@ -17,7 +17,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		{{ mode === 'create' ? i18n.ts._abuseReport._notificationRecipient.createRecipient : i18n.ts._abuseReport._notificationRecipient.modifyRecipient }}
 	</template>
 	<div v-if="loading === 0" style="display: flex; flex-direction: column; min-height: 100%;">
-		<MkSpacer :marginMin="20" :marginMax="28" style="flex-grow: 1;">
+		<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" style="flex-grow: 1px;;">
 			<div :class="$style.root" class="_gaps_m">
 				<MkInput v-model="title">
 					<template #label>{{ i18n.ts.title }}</template>
@@ -57,7 +57,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<template #label>{{ i18n.ts.enable }}</template>
 				</MkSwitch>
 			</div>
-		</MkSpacer>
+		</div>
 
 		<div :class="$style.footer" class="_buttonsCenter">
 			<MkButton primary rounded :disabled="disableSubmitButton" @click="onSubmitClicked"><i class="ti ti-check"></i> {{ i18n.ts.ok }}</MkButton>
diff --git a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue
index a569ab7c33..f5e77cbe4e 100644
--- a/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue
+++ b/packages/frontend/src/pages/admin/abuse-report/notification-recipient.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div :class="$style.root" class="_gaps_m">
 			<div :class="$style.addButton">
 				<MkButton primary @click="onAddButtonClicked">
@@ -36,7 +36,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				/>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/abuses.vue b/packages/frontend/src/pages/admin/abuses.vue
index 2335cc3db7..3dc5c2ef7e 100644
--- a/packages/frontend/src/pages/admin/abuses.vue
+++ b/packages/frontend/src/pages/admin/abuses.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div :class="$style.root" class="_gaps">
 			<div :class="$style.subMenus" class="_gaps">
 				<MkButton link to="/admin/abuse-report-notification-recipient" primary>{{ i18n.ts.notificationSetting }}</MkButton>
@@ -53,7 +53,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/ads.vue b/packages/frontend/src/pages/admin/ads.vue
index aa8ba2f7c3..c5baeda7b0 100644
--- a/packages/frontend/src/pages/admin/ads.vue
+++ b/packages/frontend/src/pages/admin/ads.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<MkSelect v-model="filterType" :class="$style.input" @update:modelValue="filterItems">
 			<template #label>{{ i18n.ts.state }}</template>
 			<option value="all">{{ i18n.ts.all }}</option>
@@ -77,7 +77,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<i class="ti ti-reload"></i>{{ i18n.ts.more }}
 			</MkButton>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/announcements.vue b/packages/frontend/src/pages/admin/announcements.vue
index ea7f0cc73d..b2d7b4889a 100644
--- a/packages/frontend/src/pages/admin/announcements.vue
+++ b/packages/frontend/src/pages/admin/announcements.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<MkInfo>{{ i18n.ts._announcement.shouldNotBeUsedToPresentPermanentInfo }}</MkInfo>
 			<MkInfo v-if="announcements.length > 5" warn>{{ i18n.ts._announcement.tooManyActiveAnnouncementDescription }}</MkInfo>
@@ -79,7 +79,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkButton>
 			</template>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/branding.vue b/packages/frontend/src/pages/admin/branding.vue
index 2674879f90..19258216f6 100644
--- a/packages/frontend/src/pages/admin/branding.vue
+++ b/packages/frontend/src/pages/admin/branding.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense :p="init">
 			<div class="_gaps_m">
 				<MkInput v-model="iconUrl" type="url">
@@ -89,12 +89,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkTextarea>
 			</div>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 	<template #footer>
 		<div :class="$style.footer">
-			<MkSpacer :contentMax="700" :marginMin="16" :marginMax="16">
+			<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 16px;">
 				<MkButton primary rounded @click="save"><i class="ti ti-check"></i> {{ i18n.ts.save }}</MkButton>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </PageWithHeader>
diff --git a/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.logs.vue b/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.logs.vue
index 4b145db0ed..c544561b13 100644
--- a/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.logs.vue
+++ b/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.logs.vue
@@ -14,9 +14,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template #header>
 		<i class="ti ti-notes" style="margin-right: 0.5em;"></i> {{ i18n.ts._customEmojisManager._gridCommon.registrationLogs }}
 	</template>
-	<MkSpacer>
+	<div class="_spacer">
 		<XRegisterLogs :logs="logs"/>
-	</MkSpacer>
+	</div>
 </MkWindow>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue b/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue
index ae43507d66..9938d5cc4a 100644
--- a/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue
+++ b/packages/frontend/src/pages/admin/custom-emojis-manager.local.list.search.vue
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<i class="ti ti-search" style="margin-right: 0.5em;"></i> {{ i18n.ts.search }}
 	</template>
 	<div :class="$style.root">
-		<MkSpacer>
+		<div class="_spacer">
 			<div class="_gaps">
 				<div class="_gaps_s">
 					<MkInput
@@ -107,7 +107,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					/>
 				</MkFolder>
 			</div>
-		</MkSpacer>
+		</div>
 		<div :class="$style.footerActions">
 			<MkButton primary @click="onSearchRequest">
 				{{ i18n.ts.search }}
diff --git a/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue b/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue
index 566acdea31..e8e944df32 100644
--- a/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue
+++ b/packages/frontend/src/pages/admin/custom-emojis-manager.register.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer>
+<div class="_spacer">
 	<div class="_gaps">
 		<MkFolder>
 			<template #icon><i class="ti ti-settings"></i></template>
@@ -68,7 +68,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkButton>
 		</div>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script setup lang="ts">
diff --git a/packages/frontend/src/pages/admin/database.vue b/packages/frontend/src/pages/admin/database.vue
index 6691142a64..d51f43c098 100644
--- a/packages/frontend/src/pages/admin/database.vue
+++ b/packages/frontend/src/pages/admin/database.vue
@@ -5,14 +5,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 800px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense v-slot="{ result: database }" :p="databasePromiseFactory">
 			<MkKeyValue v-for="table in database" :key="table[0]" oneline style="margin: 1em 0;">
 				<template #key>{{ table[0] }}</template>
 				<template #value>{{ bytes(table[1].size) }} ({{ number(table[1].count) }} recs)</template>
 			</MkKeyValue>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/email-settings.vue b/packages/frontend/src/pages/admin/email-settings.vue
index 9f73808493..17f2f8b593 100644
--- a/packages/frontend/src/pages/admin/email-settings.vue
+++ b/packages/frontend/src/pages/admin/email-settings.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense :p="init">
 			<div class="_gaps_m">
 				<MkSwitch v-model="enableEmail">
@@ -48,15 +48,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</template>
 			</div>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 	<template #footer>
 		<div :class="$style.footer">
-			<MkSpacer :contentMax="700" :marginMin="16" :marginMax="16">
+			<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 16px;">
 				<div class="_buttons">
 					<MkButton primary rounded @click="save"><i class="ti ti-check"></i> {{ i18n.ts.save }}</MkButton>
 					<MkButton rounded @click="testEmail"><i class="ti ti-send"></i> {{ i18n.ts.testEmail }}</MkButton>
 				</div>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </PageWithHeader>
diff --git a/packages/frontend/src/pages/admin/external-services.vue b/packages/frontend/src/pages/admin/external-services.vue
index cacf6273f9..845fb12c5d 100644
--- a/packages/frontend/src/pages/admin/external-services.vue
+++ b/packages/frontend/src/pages/admin/external-services.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense :p="init">
 			<div class="_gaps_m">
 				<MkFolder>
@@ -36,7 +36,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkFolder>
 			</div>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/federation-job-queue.vue b/packages/frontend/src/pages/admin/federation-job-queue.vue
index 77e460d0eb..173cffedc2 100644
--- a/packages/frontend/src/pages/admin/federation-job-queue.vue
+++ b/packages/frontend/src/pages/admin/federation-job-queue.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<XQueue v-if="tab === 'deliver'" domain="deliver"/>
 		<XQueue v-else-if="tab === 'inbox'" domain="inbox"/>
 		<br>
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkButton @click="promoteAllQueues"><i class="ti ti-reload"></i> {{ i18n.ts.retryAllQueuesNow }}</MkButton>
 			<MkButton danger @click="clear"><i class="ti ti-trash"></i> {{ i18n.ts.clearQueue }}</MkButton>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/federation.vue b/packages/frontend/src/pages/admin/federation.vue
index 065a8021f1..73b25277b3 100644
--- a/packages/frontend/src/pages/admin/federation.vue
+++ b/packages/frontend/src/pages/admin/federation.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<div>
 				<MkInput v-model="host" :debounce="true" class="">
@@ -50,7 +50,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/files.vue b/packages/frontend/src/pages/admin/files.vue
index 12c633bf7f..87595a820b 100644
--- a/packages/frontend/src/pages/admin/files.vue
+++ b/packages/frontend/src/pages/admin/files.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<div class="inputs" style="display: flex; gap: var(--MI-margin); flex-wrap: wrap;">
 				<MkSelect v-model="origin" style="margin: 0; flex: 1;">
@@ -28,7 +28,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 			<MkFileListForAdmin :pagination="pagination" :viewMode="viewMode"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/index.vue b/packages/frontend/src/pages/admin/index.vue
index d2246b7512..a87028f008 100644
--- a/packages/frontend/src/pages/admin/index.vue
+++ b/packages/frontend/src/pages/admin/index.vue
@@ -6,7 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <div ref="el" class="hiyeyicy" :class="{ wide: !narrow }">
 	<div v-if="!narrow || currentPage?.route.name == null" class="nav">
-		<MkSpacer :contentMax="700" :marginMin="16">
+		<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px;">
 			<div class="lxpfedzu _gaps">
 				<div class="banner">
 					<img :src="instance.iconUrl || '/favicon.ico'" alt="" class="icon"/>
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 				<MkSuperMenu :def="menuDef" :grid="narrow"></MkSuperMenu>
 			</div>
-		</MkSpacer>
+		</div>
 	</div>
 	<div v-if="!(narrow && currentPage?.route.name == null)" class="main _pageContainer" style="height: 100%;">
 		<NestedRouterView/>
diff --git a/packages/frontend/src/pages/admin/invites.vue b/packages/frontend/src/pages/admin/invites.vue
index c990b85d93..072175f3af 100644
--- a/packages/frontend/src/pages/admin/invites.vue
+++ b/packages/frontend/src/pages/admin/invites.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div class="_gaps_m">
 			<MkFolder :expanded="false">
 				<template #icon><i class="ti ti-plus"></i></template>
@@ -49,7 +49,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</template>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/job-queue.vue b/packages/frontend/src/pages/admin/job-queue.vue
index 528c473c4f..3d405c566f 100644
--- a/packages/frontend/src/pages/admin/job-queue.vue
+++ b/packages/frontend/src/pages/admin/job-queue.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer>
+	<div class="_spacer">
 		<div v-if="tab === '-'" class="_gaps">
 			<div :class="$style.queues">
 				<div v-for="q in queueInfos" :key="q.name" :class="$style.queue" @click="tab = q.name">
@@ -139,7 +139,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					</div>
 				</template>
 
-				<MkSpacer>
+				<div class="_spacer">
 					<MkInput
 						v-model="searchQuery"
 						:placeholder="i18n.ts.search"
@@ -163,10 +163,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<XJob :job="job" :queueType="tab" style="margin: 4px 0;" @needRefresh="refreshJob(job.id)"/>
 						</template>
 					</MkTl>
-				</MkSpacer>
+				</div>
 			</MkFolder>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/moderation.vue b/packages/frontend/src/pages/admin/moderation.vue
index 983dd1b2ee..2157b4ca14 100644
--- a/packages/frontend/src/pages/admin/moderation.vue
+++ b/packages/frontend/src/pages/admin/moderation.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense :p="init">
 			<div class="_gaps_m">
 				<MkSwitch :modelValue="enableRegistration" @update:modelValue="onChange_enableRegistration">
@@ -119,7 +119,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkFolder>
 			</div>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/modlog.vue b/packages/frontend/src/pages/admin/modlog.vue
index 4623e540f2..3701e69fc6 100644
--- a/packages/frontend/src/pages/admin/modlog.vue
+++ b/packages/frontend/src/pages/admin/modlog.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<div style="display: flex; gap: var(--MI-margin); flex-wrap: wrap;">
 				<MkSelect v-model="type" style="margin: 0; flex: 1;">
@@ -33,7 +33,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 			<MkButton primary rounded style="margin: 0 auto;" @click="fetchMore">{{ i18n.ts.loadMore }}</MkButton>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/object-storage.vue b/packages/frontend/src/pages/admin/object-storage.vue
index 36f4392142..7a46ae41c6 100644
--- a/packages/frontend/src/pages/admin/object-storage.vue
+++ b/packages/frontend/src/pages/admin/object-storage.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense :p="init">
 			<div class="_gaps_m">
 				<MkSwitch v-model="useObjectStorage">{{ i18n.ts.useObjectStorage }}</MkSwitch>
@@ -70,12 +70,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</template>
 			</div>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 	<template #footer>
 		<div :class="$style.footer">
-			<MkSpacer :contentMax="700" :marginMin="16" :marginMax="16">
+			<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 16px;">
 				<MkButton primary rounded @click="save"><i class="ti ti-check"></i> {{ i18n.ts.save }}</MkButton>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </PageWithHeader>
diff --git a/packages/frontend/src/pages/admin/overview.vue b/packages/frontend/src/pages/admin/overview.vue
index 616815a6a6..caa888b51d 100644
--- a/packages/frontend/src/pages/admin/overview.vue
+++ b/packages/frontend/src/pages/admin/overview.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="1000">
+<div class="_spacer" style="--MI_SPACER-w: 1000px;">
 	<div ref="rootEl" :class="$style.root">
 		<MkFoldableSection class="item">
 			<template #header>Stats</template>
@@ -61,7 +61,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<XQueue domain="inbox"/>
 		</MkFoldableSection>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/admin/performance.vue b/packages/frontend/src/pages/admin/performance.vue
index 075db4ebef..a272b9adea 100644
--- a/packages/frontend/src/pages/admin/performance.vue
+++ b/packages/frontend/src/pages/admin/performance.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div class="_gaps">
 			<div class="_panel" style="padding: 16px;">
 				<MkSwitch v-model="enableServerMachineStats" @change="onChange_enableServerMachineStats">
@@ -102,7 +102,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkFolder>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/relays.vue b/packages/frontend/src/pages/admin/relays.vue
index 7803edc360..aabf64342e 100644
--- a/packages/frontend/src/pages/admin/relays.vue
+++ b/packages/frontend/src/pages/admin/relays.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div class="_gaps">
 			<div v-for="relay in relays" :key="relay.inbox" class="relaycxt _panel" style="padding: 16px;">
 				<div>{{ relay.inbox }}</div>
@@ -18,7 +18,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton class="button" inline danger @click="remove(relay.inbox)"><i class="ti ti-trash"></i> {{ i18n.ts.remove }}</MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/roles.edit.vue b/packages/frontend/src/pages/admin/roles.edit.vue
index 62777f59ef..7790fe3925 100644
--- a/packages/frontend/src/pages/admin/roles.edit.vue
+++ b/packages/frontend/src/pages/admin/roles.edit.vue
@@ -5,14 +5,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs">
-	<MkSpacer :contentMax="600" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<XEditor v-if="data" v-model="data"/>
-	</MkSpacer>
+	</div>
 	<template #footer>
 		<div :class="$style.footer">
-			<MkSpacer :contentMax="600" :marginMin="16" :marginMax="16">
+			<div class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 16px;">
 				<MkButton primary rounded @click="save"><i class="ti ti-check"></i> {{ i18n.ts.save }}</MkButton>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </PageWithHeader>
diff --git a/packages/frontend/src/pages/admin/roles.role.vue b/packages/frontend/src/pages/admin/roles.role.vue
index 0e825ddc86..69645957bf 100644
--- a/packages/frontend/src/pages/admin/roles.role.vue
+++ b/packages/frontend/src/pages/admin/roles.role.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div class="_gaps">
 			<div class="_buttons">
 				<MkButton primary rounded @click="edit"><i class="ti ti-pencil"></i> {{ i18n.ts.edit }}</MkButton>
@@ -54,7 +54,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkFolder>
 			<MkInfo v-else>{{ i18n.ts._role.isConditionalRole }}</MkInfo>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/roles.vue b/packages/frontend/src/pages/admin/roles.vue
index 995f425ae8..83bebb6cea 100644
--- a/packages/frontend/src/pages/admin/roles.vue
+++ b/packages/frontend/src/pages/admin/roles.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div class="_gaps">
 			<MkFolder>
 				<template #label>{{ i18n.ts._role.baseRole }}</template>
@@ -291,7 +291,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkFoldableSection>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/security.vue b/packages/frontend/src/pages/admin/security.vue
index 28bf88623b..ffb34f6e52 100644
--- a/packages/frontend/src/pages/admin/security.vue
+++ b/packages/frontend/src/pages/admin/security.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div class="_gaps_m">
 			<XBotProtection/>
 
@@ -115,7 +115,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkFolder>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/server-rules.vue b/packages/frontend/src/pages/admin/server-rules.vue
index c5fb118470..276a7590c4 100644
--- a/packages/frontend/src/pages/admin/server-rules.vue
+++ b/packages/frontend/src/pages/admin/server-rules.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div class="_gaps_m">
 			<div>{{ i18n.ts._serverRules.description }}</div>
 			<Sortable
@@ -33,7 +33,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton primary rounded @click="save"><i class="ti ti-check"></i> {{ i18n.ts.save }}</MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/settings.vue b/packages/frontend/src/pages/admin/settings.vue
index efa98da048..d7454882b2 100644
--- a/packages/frontend/src/pages/admin/settings.vue
+++ b/packages/frontend/src/pages/admin/settings.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs">
-	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div class="_gaps_m">
 			<MkFolder :defaultOpen="true">
 				<template #icon><i class="ti ti-info-circle"></i></template>
@@ -250,7 +250,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkFolder>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/system-webhook.vue b/packages/frontend/src/pages/admin/system-webhook.vue
index a3214028e6..d5402f608c 100644
--- a/packages/frontend/src/pages/admin/system-webhook.vue
+++ b/packages/frontend/src/pages/admin/system-webhook.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps_m">
 			<MkButton primary @click="onCreateWebhookClicked">
 				<i class="ti ti-plus"></i> {{ i18n.ts._webhookSettings.createWebhook }}
@@ -17,7 +17,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</FormSection>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/admin/users.vue b/packages/frontend/src/pages/admin/users.vue
index cef0e94753..6eb3c04dde 100644
--- a/packages/frontend/src/pages/admin/users.vue
+++ b/packages/frontend/src/pages/admin/users.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<div :class="$style.inputs">
 				<MkButton style="margin-left: auto" @click="resetQuery">{{ i18n.ts.reset }}</MkButton>
@@ -52,7 +52,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/ads.vue b/packages/frontend/src/pages/ads.vue
index 700ac0bd1a..31b66584d9 100644
--- a/packages/frontend/src/pages/ads.vue
+++ b/packages/frontend/src/pages/ads.vue
@@ -5,11 +5,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="500">
+	<div class="_spacer" style="--MI_SPACER-w: 500px;">
 		<div class="_gaps">
 			<MkAd v-for="ad in instance.ads" :key="ad.id" :specify="ad"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/announcement.vue b/packages/frontend/src/pages/announcement.vue
index 4b2109dbb9..f9b870eda1 100644
--- a/packages/frontend/src/pages/announcement.vue
+++ b/packages/frontend/src/pages/announcement.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<Transition
 			:enterActiveClass="prefer.s.animation ? $style.fadeEnterActive : ''"
 			:leaveActiveClass="prefer.s.animation ? $style.fadeLeaveActive : ''"
@@ -42,7 +42,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkError v-else-if="error" @retry="fetch()"/>
 			<MkLoading v-else/>
 		</Transition>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/announcements.vue b/packages/frontend/src/pages/announcements.vue
index 23626782b4..bb4730c606 100644
--- a/packages/frontend/src/pages/announcements.vue
+++ b/packages/frontend/src/pages/announcements.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div class="_gaps">
 			<MkInfo v-if="$i && $i.hasUnreadAnnouncement && tab === 'current'" warn>{{ i18n.ts.youHaveUnreadAnnouncements }}</MkInfo>
 			<MkPagination ref="paginationEl" :key="tab" v-slot="{items}" :pagination="tab === 'current' ? paginationCurrent : paginationPast" class="_gaps">
@@ -39,7 +39,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</section>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/antenna-timeline.vue b/packages/frontend/src/pages/antenna-timeline.vue
index 030a2a46ad..89ab1bf99a 100644
--- a/packages/frontend/src/pages/antenna-timeline.vue
+++ b/packages/frontend/src/pages/antenna-timeline.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div ref="rootEl">
 			<div v-if="queue > 0" :class="$style.new"><button class="_buttonPrimary" :class="$style.newButton" @click="top()">{{ i18n.ts.newNoteRecived }}</button></div>
 			<div :class="$style.tl">
@@ -18,7 +18,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				/>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/api-console.vue b/packages/frontend/src/pages/api-console.vue
index c2e877f3c7..7571696b84 100644
--- a/packages/frontend/src/pages/api-console.vue
+++ b/packages/frontend/src/pages/api-console.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div class="_gaps_m">
 			<div class="_gaps_m">
 				<MkInput v-model="endpoint" :datalist="endpoints" @update:modelValue="onEndpointChange()">
@@ -28,7 +28,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkTextarea>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/auth.vue b/packages/frontend/src/pages/auth.vue
index f0c36f4264..ede0f268ee 100644
--- a/packages/frontend/src/pages/auth.vue
+++ b/packages/frontend/src/pages/auth.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="500">
+	<div class="_spacer" style="--MI_SPACER-w: 500px;">
 		<div v-if="state == 'fetch-session-error'">
 			<p>{{ i18n.ts.somethingHappened }}</p>
 		</div>
@@ -36,7 +36,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<p :class="$style.loginMessage">{{ i18n.ts._auth.pleaseLogin }}</p>
 			<MkSignin @login="onLogin"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue b/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
index 5a5e305f80..40c4144d9b 100644
--- a/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
+++ b/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template v-else #header>New decoration</template>
 
 	<div style="display: flex; flex-direction: column; min-height: 100%;">
-		<MkSpacer :marginMin="20" :marginMax="28" style="flex-grow: 1;">
+		<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" style="flex-grow: 1px;;">
 			<div class="_gaps_m">
 				<div :class="$style.preview">
 					<div :class="[$style.previewItem, $style.light]">
@@ -51,7 +51,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkFolder>
 				<MkButton v-if="avatarDecoration" danger @click="del()"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
 			</div>
-		</MkSpacer>
+		</div>
 		<div :class="$style.footer">
 			<MkButton primary rounded style="margin: 0 auto;" @click="done"><i class="ti ti-check"></i> {{ props.avatarDecoration ? i18n.ts.update : i18n.ts.create }}</MkButton>
 		</div>
diff --git a/packages/frontend/src/pages/avatar-decorations.vue b/packages/frontend/src/pages/avatar-decorations.vue
index 2bab449089..675e558de9 100644
--- a/packages/frontend/src/pages/avatar-decorations.vue
+++ b/packages/frontend/src/pages/avatar-decorations.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="_gaps">
 			<div :class="$style.decorations">
 				<div
@@ -20,7 +20,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/channel-editor.vue b/packages/frontend/src/pages/channel-editor.vue
index 084fee15cf..009514cdc8 100644
--- a/packages/frontend/src/pages/channel-editor.vue
+++ b/packages/frontend/src/pages/channel-editor.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div v-if="channelId == null || channel != null" class="_gaps_m">
 			<MkInput v-model="name">
 				<template #label>{{ i18n.ts.name }}</template>
@@ -63,7 +63,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton v-if="channelId" danger @click="archive()"><i class="ti ti-trash"></i> {{ i18n.ts.archive }}</MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/channel.vue b/packages/frontend/src/pages/channel.vue
index ed54fff5ce..1c411d2a2e 100644
--- a/packages/frontend/src/pages/channel.vue
+++ b/packages/frontend/src/pages/channel.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div v-if="channel && tab === 'overview'" class="_gaps">
 			<div class="_panel" :class="$style.bannerContainer">
 				<XChannelFollowButton :channel="channel" :full="true" :class="$style.subscribe"/>
@@ -56,14 +56,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkInfo warn>{{ i18n.ts.notesSearchNotAvailable }}</MkInfo>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 	<template #footer>
 		<div :class="$style.footer">
-			<MkSpacer :contentMax="700" :marginMin="16" :marginMax="16">
+			<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 16px;">
 				<div class="_buttonsCenter">
 					<MkButton inline rounded primary gradate @click="openPostForm()"><i class="ti ti-pencil"></i> {{ i18n.ts.postToTheChannel }}</MkButton>
 				</div>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </PageWithHeader>
diff --git a/packages/frontend/src/pages/channels.vue b/packages/frontend/src/pages/channels.vue
index 80f0c9ca3b..b2b2bc02d2 100644
--- a/packages/frontend/src/pages/channels.vue
+++ b/packages/frontend/src/pages/channels.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="1200">
+	<div class="_spacer" style="--MI_SPACER-w: 1200px;">
 		<div v-if="tab === 'search'" :class="$style.searchRoot">
 			<div class="_gaps">
 				<MkInput v-model="searchQuery" :large="true" :autofocus="true" type="search" @enter="search">
@@ -52,7 +52,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/chat/home.vue b/packages/frontend/src/pages/chat/home.vue
index e37634b4b3..652ab04be6 100644
--- a/packages/frontend/src/pages/chat/home.vue
+++ b/packages/frontend/src/pages/chat/home.vue
@@ -6,12 +6,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
 	<MkPolkadots v-if="tab === 'home'" accented/>
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<XHome v-if="tab === 'home'"/>
 		<XInvitations v-else-if="tab === 'invitations'"/>
 		<XJoiningRooms v-else-if="tab === 'joiningRooms'"/>
 		<XOwnedRooms v-else-if="tab === 'ownedRooms'"/>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/chat/message.vue b/packages/frontend/src/pages/chat/message.vue
index 3ac90a93fd..a04ec7fd87 100644
--- a/packages/frontend/src/pages/chat/message.vue
+++ b/packages/frontend/src/pages/chat/message.vue
@@ -5,14 +5,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div v-if="initializing || message == null">
 			<MkLoading/>
 		</div>
 		<div v-else>
 			<XMessage :message="message" :isSearchResult="true"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/chat/room.vue b/packages/frontend/src/pages/chat/room.vue
index 8b351c1ec8..d44b548a2e 100644
--- a/packages/frontend/src/pages/chat/room.vue
+++ b/packages/frontend/src/pages/chat/room.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :reversed="tab === 'chat'" :tabs="headerTabs" :actions="headerActions">
-	<MkSpacer v-if="tab === 'chat'" :contentMax="700">
+	<div class="_spacer" v-if="tab === 'chat'" style="--MI_SPACER-w: 700px;">
 		<div class="_gaps">
 			<div v-if="initializing">
 				<MkLoading/>
@@ -56,19 +56,19 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 			<MkInfo v-if="$i.policies.chatAvailability !== 'available'" warn>{{ $i.policies.chatAvailability === 'readonly' ? i18n.ts._chat.chatIsReadOnlyForThisAccountOrServer : i18n.ts._chat.chatNotAvailableForThisAccountOrServer }}</MkInfo>
 		</div>
-	</MkSpacer>
+	</div>
 
-	<MkSpacer v-else-if="tab === 'search'" :contentMax="700">
+	<div class="_spacer" v-else-if="tab === 'search'" style="--MI_SPACER-w: 700px;">
 		<XSearch :userId="userId" :roomId="roomId"/>
-	</MkSpacer>
+	</div>
 
-	<MkSpacer v-else-if="tab === 'members'" :contentMax="700">
+	<div class="_spacer" v-else-if="tab === 'members'" style="--MI_SPACER-w: 700px;">
 		<XMembers v-if="room != null" :room="room" @inviteUser="inviteUser"/>
-	</MkSpacer>
+	</div>
 
-	<MkSpacer v-else-if="tab === 'info'" :contentMax="700">
+	<div class="_spacer" v-else-if="tab === 'info'" style="--MI_SPACER-w: 700px;">
 		<XInfo v-if="room != null" :room="room"/>
-	</MkSpacer>
+	</div>
 
 	<template #footer>
 		<div v-if="tab === 'chat'" :class="$style.footer">
diff --git a/packages/frontend/src/pages/clicker.vue b/packages/frontend/src/pages/clicker.vue
index 479204f39b..d418a78ee5 100644
--- a/packages/frontend/src/pages/clicker.vue
+++ b/packages/frontend/src/pages/clicker.vue
@@ -5,9 +5,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<MkClickerGame/>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/clip.vue b/packages/frontend/src/pages/clip.vue
index a2fb02462e..68c5d6c270 100644
--- a/packages/frontend/src/pages/clip.vue
+++ b/packages/frontend/src/pages/clip.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div v-if="clip" class="_gaps">
 			<div class="_panel">
 				<div class="_gaps_s" :class="$style.description">
@@ -25,7 +25,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 			<MkNotes :pagination="pagination" :detail="true"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/contact.vue b/packages/frontend/src/pages/contact.vue
index 39d70cafc7..5fbc5e1262 100644
--- a/packages/frontend/src/pages/contact.vue
+++ b/packages/frontend/src/pages/contact.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="600" :marginMin="20">
+	<div class="_spacer" style="--MI_SPACER-w: 600" :marginMin="20px;">
 		<div class="_gaps_m">
 			<MkKeyValue :copy="instance.maintainerName">
 				<template #key>{{ i18n.ts.administrator }}</template>
@@ -29,7 +29,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</template>
 			</MkKeyValue>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/custom-emojis-manager.vue b/packages/frontend/src/pages/custom-emojis-manager.vue
index 22748e770a..16a95c6753 100644
--- a/packages/frontend/src/pages/custom-emojis-manager.vue
+++ b/packages/frontend/src/pages/custom-emojis-manager.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="900">
+	<div class="_spacer" style="--MI_SPACER-w: 900px;">
 		<div class="ogwlenmc">
 			<div v-if="tab === 'local'" class="local">
 				<MkInput v-model="query" :debounce="true" type="search" autocapitalize="off">
@@ -66,7 +66,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkPagination>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/drive.file.vue b/packages/frontend/src/pages/drive.file.vue
index 170d48064f..c426eef92f 100644
--- a/packages/frontend/src/pages/drive.file.vue
+++ b/packages/frontend/src/pages/drive.file.vue
@@ -10,13 +10,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</template>
 
 	<MkSwiper v-model:tab="tab" :tabs="headerTabs">
-		<MkSpacer v-if="tab === 'info'" :contentMax="800">
+		<div class="_spacer" v-if="tab === 'info'" style="--MI_SPACER-w: 800px;">
 			<XFileInfo :fileId="fileId"/>
-		</MkSpacer>
+		</div>
 
-		<MkSpacer v-else-if="tab === 'notes'" :contentMax="800">
+		<div class="_spacer" v-else-if="tab === 'notes'" style="--MI_SPACER-w: 800px;">
 			<XNotes :fileId="fileId"/>
-		</MkSpacer>
+		</div>
 	</MkSwiper>
 </MkStickyContainer>
 </template>
diff --git a/packages/frontend/src/pages/drop-and-fusion.game.vue b/packages/frontend/src/pages/drop-and-fusion.game.vue
index b8b0d6aef6..88300d8a74 100644
--- a/packages/frontend/src/pages/drop-and-fusion.game.vue
+++ b/packages/frontend/src/pages/drop-and-fusion.game.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="800">
+<div class="_spacer" style="--MI_SPACER-w: 800px;">
 	<div :class="$style.root">
 		<div v-if="!gameLoaded" :class="$style.loadingScreen">
 			<div>{{ i18n.ts.loading }}<MkEllipsis/></div>
@@ -187,7 +187,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 		</div>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/drop-and-fusion.vue b/packages/frontend/src/pages/drop-and-fusion.vue
index 7f571a7c36..103174ddbf 100644
--- a/packages/frontend/src/pages/drop-and-fusion.vue
+++ b/packages/frontend/src/pages/drop-and-fusion.vue
@@ -12,7 +12,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	:moveClass="$style.transition_zoom_move"
 	mode="out-in"
 >
-	<MkSpacer v-if="!gameStarted" :contentMax="800">
+	<div class="_spacer" v-if="!gameStarted" style="--MI_SPACER-w: 800px;">
 		<div :class="$style.root">
 			<div class="_gaps">
 				<div class="_woodenFrame" style="text-align: center;">
@@ -80,7 +80,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 	<XGame v-else :gameMode="gameMode" :mute="mute" @end="onGameEnd"/>
 </Transition>
 </template>
diff --git a/packages/frontend/src/pages/emoji-edit-dialog.vue b/packages/frontend/src/pages/emoji-edit-dialog.vue
index d0d8970309..8ac55c4f35 100644
--- a/packages/frontend/src/pages/emoji-edit-dialog.vue
+++ b/packages/frontend/src/pages/emoji-edit-dialog.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template v-else #header>New emoji</template>
 
 	<div style="display: flex; flex-direction: column; min-height: 100%;">
-		<MkSpacer :marginMin="20" :marginMax="28" style="flex-grow: 1;">
+		<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28" style="flex-grow: 1px;;">
 			<div class="_gaps_m">
 				<div v-if="imgUrl != null" :class="$style.imgs">
 					<div style="background: #000;" :class="$style.imgContainer">
@@ -70,7 +70,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkSwitch v-model="localOnly">{{ i18n.ts.localOnly }}</MkSwitch>
 				<MkButton v-if="emoji" danger @click="del()"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
 			</div>
-		</MkSpacer>
+		</div>
 		<div :class="$style.footer">
 			<MkButton primary rounded style="margin: 0 auto;" @click="done"><i class="ti ti-check"></i> {{ props.emoji ? i18n.ts.update : i18n.ts.create }}</MkButton>
 		</div>
diff --git a/packages/frontend/src/pages/explore.featured.vue b/packages/frontend/src/pages/explore.featured.vue
index 8b16a88ff3..a47e3efbc8 100644
--- a/packages/frontend/src/pages/explore.featured.vue
+++ b/packages/frontend/src/pages/explore.featured.vue
@@ -4,14 +4,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="800">
+<div class="_spacer" style="--MI_SPACER-w: 800px;">
 	<MkTab v-model="tab" style="margin-bottom: var(--MI-margin);">
 		<option value="notes">{{ i18n.ts.notes }}</option>
 		<option value="polls">{{ i18n.ts.poll }}</option>
 	</MkTab>
 	<MkNotes v-if="tab === 'notes'" :pagination="paginationForNotes"/>
 	<MkNotes v-else-if="tab === 'polls'" :pagination="paginationForPolls"/>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/explore.roles.vue b/packages/frontend/src/pages/explore.roles.vue
index ffefeb9618..7ee01610a7 100644
--- a/packages/frontend/src/pages/explore.roles.vue
+++ b/packages/frontend/src/pages/explore.roles.vue
@@ -4,11 +4,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<div class="_gaps_s">
 		<MkRolePreview v-for="role in roles" :key="role.id" :role="role" :forModeration="false"/>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/explore.users.vue b/packages/frontend/src/pages/explore.users.vue
index c0618b9fce..e723f6a1e9 100644
--- a/packages/frontend/src/pages/explore.users.vue
+++ b/packages/frontend/src/pages/explore.users.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="1200">
+<div class="_spacer" style="--MI_SPACER-w: 1200px;">
 	<MkTab v-if="instance.federation !== 'none'" v-model="origin" style="margin-bottom: var(--MI-margin);">
 		<option value="local">{{ i18n.ts.local }}</option>
 		<option value="remote">{{ i18n.ts.remote }}</option>
@@ -59,7 +59,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkFoldableSection>
 		</template>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/favorites.vue b/packages/frontend/src/pages/favorites.vue
index c9cb75f8f1..4f57c1209e 100644
--- a/packages/frontend/src/pages/favorites.vue
+++ b/packages/frontend/src/pages/favorites.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<MkPagination :pagination="pagination">
 			<template #empty>
 				<div class="_fullinfo">
@@ -20,7 +20,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkDateSeparatedList>
 			</template>
 		</MkPagination>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/flash/flash-edit.vue b/packages/frontend/src/pages/flash/flash-edit.vue
index 825a3be7c1..4386209f7c 100644
--- a/packages/frontend/src/pages/flash/flash-edit.vue
+++ b/packages/frontend/src/pages/flash/flash-edit.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div class="_gaps">
 			<MkInput v-model="title">
 				<template #label>{{ i18n.ts._play.title }}</template>
@@ -24,16 +24,16 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<template #label>{{ i18n.ts._play.script }}</template>
 			</MkCodeEditor>
 		</div>
-	</MkSpacer>
+	</div>
 	<template #footer>
 		<div :class="$style.footer">
-			<MkSpacer>
+			<div class="_spacer">
 				<div class="_buttons">
 					<MkButton primary @click="save"><i class="ti ti-check"></i> {{ i18n.ts.save }}</MkButton>
 					<MkButton @click="show"><i class="ti ti-eye"></i> {{ i18n.ts.show }}</MkButton>
 					<MkButton v-if="flash" danger @click="del"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
 				</div>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </PageWithHeader>
diff --git a/packages/frontend/src/pages/flash/flash-index.vue b/packages/frontend/src/pages/flash/flash-index.vue
index c05552a041..f3365fcedf 100644
--- a/packages/frontend/src/pages/flash/flash-index.vue
+++ b/packages/frontend/src/pages/flash/flash-index.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div v-if="tab === 'featured'">
 			<MkPagination v-slot="{items}" :pagination="featuredFlashsPagination">
 				<div class="_gaps_s">
@@ -32,7 +32,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/flash/flash.vue b/packages/frontend/src/pages/flash/flash.vue
index 2873822573..8eb6521aac 100644
--- a/packages/frontend/src/pages/flash/flash.vue
+++ b/packages/frontend/src/pages/flash/flash.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<Transition :name="prefer.s.animation ? 'fade' : ''" mode="out-in">
 			<div v-if="flash" :key="flash.id">
 				<Transition :name="prefer.s.animation ? 'zoom' : ''" mode="out-in">
@@ -56,7 +56,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkError v-else-if="error" @retry="fetchFlash()"/>
 			<MkLoading v-else/>
 		</Transition>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/follow-requests.vue b/packages/frontend/src/pages/follow-requests.vue
index e11bd80a1c..8ea385a74f 100644
--- a/packages/frontend/src/pages/follow-requests.vue
+++ b/packages/frontend/src/pages/follow-requests.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<MkPagination ref="paginationComponent" :pagination="pagination">
 			<template #empty>
 				<div class="_fullinfo">
@@ -34,7 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</template>
 		</MkPagination>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/gallery/edit.vue b/packages/frontend/src/pages/gallery/edit.vue
index 7831e084a2..caae30f9fd 100644
--- a/packages/frontend/src/pages/gallery/edit.vue
+++ b/packages/frontend/src/pages/gallery/edit.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 800px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense :p="init" class="_gaps">
 			<MkInput v-model="title">
 				<template #label>{{ i18n.ts.title }}</template>
@@ -32,7 +32,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton v-if="postId" danger @click="del"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
 			</div>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/gallery/index.vue b/packages/frontend/src/pages/gallery/index.vue
index 1bde30898e..af46a4cb0f 100644
--- a/packages/frontend/src/pages/gallery/index.vue
+++ b/packages/frontend/src/pages/gallery/index.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="1400">
+	<div class="_spacer" style="--MI_SPACER-w: 1400px;">
 		<div v-if="tab === 'explore'">
 			<MkFoldableSection class="_margin">
 				<template #header><i class="ti ti-clock"></i>{{ i18n.ts.recentPosts }}</template>
@@ -39,7 +39,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/gallery/post.vue b/packages/frontend/src/pages/gallery/post.vue
index 6b37a0b470..891f58ad08 100644
--- a/packages/frontend/src/pages/gallery/post.vue
+++ b/packages/frontend/src/pages/gallery/post.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="1000" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 1000px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div class="_root">
 			<Transition :name="prefer.s.animation ? 'fade' : ''" mode="out-in">
 				<div v-if="post" class="rkxwuolj">
@@ -57,7 +57,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkLoading v-else/>
 			</Transition>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/games.vue b/packages/frontend/src/pages/games.vue
index 7436c13332..12b84d19aa 100644
--- a/packages/frontend/src/pages/games.vue
+++ b/packages/frontend/src/pages/games.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div class="_gaps">
 			<div class="_panel" :class="$style.link">
 				<MkA to="/bubble-game">
@@ -18,7 +18,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkA>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/install-extensions.vue b/packages/frontend/src/pages/install-extensions.vue
index bf57b0c231..5989416962 100644
--- a/packages/frontend/src/pages/install-extensions.vue
+++ b/packages/frontend/src/pages/install-extensions.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithAnimBg>
-	<MkSpacer :contentMax="550" :marginMax="50">
+	<div class="_spacer" style="--MI_SPACER-w: 550" :marginMax="50px;">
 		<MkLoading v-if="uiPhase === 'fetching'"/>
 		<MkExtensionInstaller v-else-if="uiPhase === 'confirm' && data" :extension="data" @confirm="install()" @cancel="close_()">
 			<template #additionalInfo>
@@ -36,7 +36,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton @click="close_()">{{ i18n.ts.close }}</MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithAnimBg>
 </template>
 
diff --git a/packages/frontend/src/pages/instance-info.vue b/packages/frontend/src/pages/instance-info.vue
index be77799eb6..28ce02b87c 100644
--- a/packages/frontend/src/pages/instance-info.vue
+++ b/packages/frontend/src/pages/instance-info.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer v-if="instance" :contentMax="600" :marginMin="16" :marginMax="32">
+	<div v-if="instance" class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div v-if="tab === 'overview'" class="_gaps_m">
 			<div class="fnfelxur">
 				<img :src="faviconUrl" alt="" class="icon"/>
@@ -125,7 +125,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkObjectView tall :value="instance">
 			</MkObjectView>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/invite.vue b/packages/frontend/src/pages/invite.vue
index f6df0ffab2..4b46e586e9 100644
--- a/packages/frontend/src/pages/invite.vue
+++ b/packages/frontend/src/pages/invite.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer v-if="!instance.disableRegistration || !($i && ($i.isAdmin || $i.policies.canInvite))" :contentMax="1200">
+	<div class="_spacer" v-if="!instance.disableRegistration || !($i && ($i.isAdmin || $i.policies.canInvite))" style="--MI_SPACER-w: 1200px;">
 		<div :class="$style.root">
 			<img :class="$style.img" :src="serverErrorImageUrl" draggable="false"/>
 			<div :class="$style.text">
@@ -13,8 +13,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 				{{ i18n.ts.nothing }}
 			</div>
 		</div>
-	</MkSpacer>
-	<MkSpacer v-else :contentMax="800">
+	</div>
+	<div class="_spacer" v-else style="--MI_SPACER-w: 800px;">
 		<div class="_gaps_m" style="text-align: center;">
 			<div v-if="resetCycle && inviteLimit">{{ i18n.tsx.inviteLimitResetCycle({ time: resetCycle, limit: inviteLimit }) }}</div>
 			<MkButton inline primary rounded :disabled="currentInviteLimit !== null && currentInviteLimit <= 0" @click="create"><i class="ti ti-user-plus"></i> {{ i18n.ts.createInviteCode }}</MkButton>
@@ -28,7 +28,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</template>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/list.vue b/packages/frontend/src/pages/list.vue
index d8d006776d..ea235a7716 100644
--- a/packages/frontend/src/pages/list.vue
+++ b/packages/frontend/src/pages/list.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer v-if="error != null" :contentMax="1200">
+	<div class="_spacer" v-if="error != null" style="--MI_SPACER-w: 1200px;">
 		<div :class="$style.root">
 			<img :class="$style.img" :src="serverErrorImageUrl" draggable="false"/>
 			<p :class="$style.text">
@@ -13,8 +13,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 				{{ i18n.ts.nothing }}
 			</p>
 		</div>
-	</MkSpacer>
-	<MkSpacer v-else-if="list" :contentMax="700">
+	</div>
+	<div class="_spacer" v-else-if="list" style="--MI_SPACER-w: 700px;">
 		<div v-if="list" class="members _margin">
 			<div :class="$style.member_text">{{ i18n.ts.members }}</div>
 			<div class="_gaps_s">
@@ -28,7 +28,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<MkButton v-if="list.isLiked" v-tooltip="i18n.ts.unlike" inline :class="$style.button" asLike primary @click="unlike()"><i class="ti ti-heart-off"></i><span v-if="list.likedCount > 0" class="count">{{ list.likedCount }}</span></MkButton>
 		<MkButton v-if="!list.isLiked" v-tooltip="i18n.ts.like" inline :class="$style.button" asLike @click="like()"><i class="ti ti-heart"></i><span v-if="1 > 0" class="count">{{ list.likedCount }}</span></MkButton>
 		<MkButton inline @click="create()"><i class="ti ti-download" :class="$style.import"></i>{{ i18n.ts.import }}</MkButton>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/lookup.vue b/packages/frontend/src/pages/lookup.vue
index 623c2a6779..c969473b19 100644
--- a/packages/frontend/src/pages/lookup.vue
+++ b/packages/frontend/src/pages/lookup.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div v-if="state === 'done'" class="_buttonsCenter">
 			<MkButton @click="close">{{ i18n.ts.close }}</MkButton>
 			<MkButton @click="goToMisskey">{{ i18n.ts.goToMisskey }}</MkButton>
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div v-else class="_fullInfo">
 			<MkLoading/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/my-antennas/index.vue b/packages/frontend/src/pages/my-antennas/index.vue
index 38f6071cec..6f623abb64 100644
--- a/packages/frontend/src/pages/my-antennas/index.vue
+++ b/packages/frontend/src/pages/my-antennas/index.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div>
 			<div v-if="antennas.length === 0" class="empty">
 				<div class="_fullinfo">
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkA>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/my-clips/index.vue b/packages/frontend/src/pages/my-clips/index.vue
index 624ce3ac3f..9e427ecf35 100644
--- a/packages/frontend/src/pages/my-clips/index.vue
+++ b/packages/frontend/src/pages/my-clips/index.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div v-if="tab === 'my'" class="_gaps">
 			<MkButton primary rounded class="add" @click="create"><i class="ti ti-plus"></i> {{ i18n.ts.add }}</MkButton>
 
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div v-else-if="tab === 'favorites'" class="_gaps">
 			<MkClipPreview v-for="item in favorites" :key="item.id" :clip="item"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/my-lists/index.vue b/packages/frontend/src/pages/my-lists/index.vue
index c9660a11d3..c974f3afc7 100644
--- a/packages/frontend/src/pages/my-lists/index.vue
+++ b/packages/frontend/src/pages/my-lists/index.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div class="_gaps">
 			<div v-if="items.length === 0" class="empty">
 				<div class="_fullinfo">
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkA>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/my-lists/list.vue b/packages/frontend/src/pages/my-lists/list.vue
index c187435af9..0b76fb4725 100644
--- a/packages/frontend/src/pages/my-lists/list.vue
+++ b/packages/frontend/src/pages/my-lists/list.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div v-if="list" class="_gaps">
 			<MkFolder>
 				<template #label>{{ i18n.ts.settings }}</template>
@@ -47,7 +47,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkFolder>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/note.vue b/packages/frontend/src/pages/note.vue
index a685dec200..0f1dbc4432 100644
--- a/packages/frontend/src/pages/note.vue
+++ b/packages/frontend/src/pages/note.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div>
 			<Transition :name="prefer.s.animation ? 'fade' : ''" mode="out-in">
 				<div v-if="note">
@@ -42,7 +42,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkLoading v-else/>
 			</Transition>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/notifications.vue b/packages/frontend/src/pages/notifications.vue
index bf21ac5a08..5cb71945dd 100644
--- a/packages/frontend/src/pages/notifications.vue
+++ b/packages/frontend/src/pages/notifications.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div v-if="tab === 'all'">
 			<XNotifications :class="$style.notifications" :excludeTypes="excludeTypes"/>
 		</div>
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div v-else-if="tab === 'directNotes'">
 			<MkNotes :pagination="directNotesPagination"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/page-editor/page-editor.vue b/packages/frontend/src/pages/page-editor/page-editor.vue
index 355a8a65da..f1b1c2f1d8 100644
--- a/packages/frontend/src/pages/page-editor/page-editor.vue
+++ b/packages/frontend/src/pages/page-editor/page-editor.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div class="jqqmcavi">
 			<MkButton v-if="pageId" class="button" inline link :to="`/@${ author.username }/pages/${ currentName }`"><i class="ti ti-external-link"></i> {{ i18n.ts._pages.viewPage }}</MkButton>
 			<MkButton v-if="!readonly" inline primary class="button" @click="save"><i class="ti ti-device-floppy"></i> {{ i18n.ts.save }}</MkButton>
@@ -55,7 +55,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton v-if="!readonly" rounded class="add" @click="add()"><i class="ti ti-plus"></i></MkButton>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/page.vue b/packages/frontend/src/pages/page.vue
index 6c2eced4e6..82c953a2df 100644
--- a/packages/frontend/src/pages/page.vue
+++ b/packages/frontend/src/pages/page.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<Transition
 			:enterActiveClass="prefer.s.animation ? $style.fadeEnterActive : ''"
 			:leaveActiveClass="prefer.s.animation ? $style.fadeLeaveActive : ''"
@@ -92,7 +92,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkError v-else-if="error" @retry="fetchPage()"/>
 			<MkLoading v-else/>
 		</Transition>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/pages.vue b/packages/frontend/src/pages/pages.vue
index c727238a55..880c4deb25 100644
--- a/packages/frontend/src/pages/pages.vue
+++ b/packages/frontend/src/pages/pages.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div v-if="tab === 'featured'">
 			<MkPagination v-slot="{items}" :pagination="featuredPagesPagination">
 				<div class="_gaps">
@@ -30,7 +30,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/registry.keys.vue b/packages/frontend/src/pages/registry.keys.vue
index 373394de55..acf7e8d6c7 100644
--- a/packages/frontend/src/pages/registry.keys.vue
+++ b/packages/frontend/src/pages/registry.keys.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="600" :marginMin="16">
+	<div class="_spacer" style="--MI_SPACER-w: 600" :marginMin="16px;">
 		<div class="_gaps_m">
 			<FormSplit>
 				<MkKeyValue>
@@ -27,7 +27,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</FormSection>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/registry.value.vue b/packages/frontend/src/pages/registry.value.vue
index 7c0a7f20bb..f64522d5b0 100644
--- a/packages/frontend/src/pages/registry.value.vue
+++ b/packages/frontend/src/pages/registry.value.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="600" :marginMin="16">
+	<div class="_spacer" style="--MI_SPACER-w: 600" :marginMin="16px;">
 		<div class="_gaps_m">
 			<FormInfo warn>{{ i18n.ts.editTheseSettingsMayBreakAccount }}</FormInfo>
 
@@ -39,7 +39,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkButton danger @click="del"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
 			</template>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/registry.vue b/packages/frontend/src/pages/registry.vue
index c60833920b..48c31de070 100644
--- a/packages/frontend/src/pages/registry.vue
+++ b/packages/frontend/src/pages/registry.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="600" :marginMin="16">
+	<div class="_spacer" style="--MI_SPACER-w: 600" :marginMin="16px;">
 		<MkButton primary @click="createKey">{{ i18n.ts._registry.createKey }}</MkButton>
 
 		<div v-if="scopesWithDomain" class="_gaps_m">
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</FormSection>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/reset-password.vue b/packages/frontend/src/pages/reset-password.vue
index 0a7726a7f8..6584888148 100644
--- a/packages/frontend/src/pages/reset-password.vue
+++ b/packages/frontend/src/pages/reset-password.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer v-if="token" :contentMax="700" :marginMin="16" :marginMax="32">
+	<div v-if="token" class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div class="_gaps_m">
 			<MkInput v-model="password" type="password">
 				<template #prefix><i class="ti ti-lock"></i></template>
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 			<MkButton primary @click="save">{{ i18n.ts.save }}</MkButton>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/reversi/game.board.vue b/packages/frontend/src/pages/reversi/game.board.vue
index b7434bff9f..c0c90cb993 100644
--- a/packages/frontend/src/pages/reversi/game.board.vue
+++ b/packages/frontend/src/pages/reversi/game.board.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="500">
+<div class="_spacer" style="--MI_SPACER-w: 500px;">
 	<div :class="$style.root" class="_gaps">
 		<div style="display: flex; align-items: center; justify-content: center; gap: 10px;">
 			<span>({{ i18n.ts._reversi.black }})</span>
@@ -138,7 +138,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<img src="/client-assets/reversi/logo.png" style="display: block; max-width: 100%; width: 200px; margin: auto;"/>
 		</MkA>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/reversi/game.setting.vue b/packages/frontend/src/pages/reversi/game.setting.vue
index 957b1cfc3d..8392384963 100644
--- a/packages/frontend/src/pages/reversi/game.setting.vue
+++ b/packages/frontend/src/pages/reversi/game.setting.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <MkStickyContainer>
-	<MkSpacer :contentMax="600">
+	<div class="_spacer" style="--MI_SPACER-w: 600px;">
 		<div style="text-align: center;"><b><MkUserName :user="game.user1"/></b> vs <b><MkUserName :user="game.user2"/></b></div>
 
 		<div :class="{ [$style.disallow]: isReady }">
@@ -82,10 +82,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</template>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 	<template #footer>
 		<div :class="$style.footer">
-			<MkSpacer :contentMax="700" :marginMin="16" :marginMax="16">
+			<div class="_spacer" style="--MI_SPACER-w: 700px; --MI_SPACER-min: 16px; --MI_SPACER-max: 16px;">
 				<div style="text-align: center;" class="_gaps_s">
 					<div v-if="opponentHasSettingsChanged" style="color: var(--MI_THEME-warn);">{{ i18n.ts._reversi.opponentHasSettingsChanged }}</div>
 					<div>
@@ -103,7 +103,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<MkSwitch v-model="shareWhenStart">{{ i18n.ts._reversi.shareToTlTheGameWhenStart }}</MkSwitch>
 					</div>
 				</div>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </MkStickyContainer>
diff --git a/packages/frontend/src/pages/reversi/index.vue b/packages/frontend/src/pages/reversi/index.vue
index e3f01d9938..fa31c590d0 100644
--- a/packages/frontend/src/pages/reversi/index.vue
+++ b/packages/frontend/src/pages/reversi/index.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer v-if="!matchingAny && !matchingUser" :contentMax="600">
+<div class="_spacer" v-if="!matchingAny && !matchingUser" style="--MI_SPACER-w: 600px;">
 	<div class="_gaps">
 		<div>
 			<img src="/client-assets/reversi/logo.png" style="display: block; max-width: 100%; max-height: 200px; margin: auto;"/>
@@ -83,8 +83,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkPagination>
 		</MkFolder>
 	</div>
-</MkSpacer>
-<MkSpacer v-else :contentMax="600">
+</div>
+<div class="_spacer" v-else style="--MI_SPACER-w: 600px;">
 	<div :class="$style.waitingScreen">
 		<div v-if="matchingUser" :class="$style.waitingScreenTitle">
 			<I18n :src="i18n.ts.waitingFor" tag="span">
@@ -101,7 +101,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkButton inline rounded @click="cancelMatching">{{ i18n.ts.cancel }}</MkButton>
 		</div>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/role.vue b/packages/frontend/src/pages/role.vue
index 86398b731e..b2fd9503b6 100644
--- a/packages/frontend/src/pages/role.vue
+++ b/packages/frontend/src/pages/role.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :tabs="headerTabs">
-	<MkSpacer v-if="error != null" :contentMax="1200">
+	<div class="_spacer" v-if="error != null" style="--MI_SPACER-w: 1200px;">
 		<div :class="$style.root">
 			<img :class="$style.img" :src="serverErrorImageUrl" draggable="false"/>
 			<p :class="$style.text">
@@ -13,8 +13,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 				{{ error }}
 			</p>
 		</div>
-	</MkSpacer>
-	<MkSpacer v-else-if="tab === 'users'" :contentMax="1200">
+	</div>
+	<div class="_spacer" v-else-if="tab === 'users'" style="--MI_SPACER-w: 1200px;">
 		<div class="_gaps_s">
 			<div v-if="role">{{ role.description }}</div>
 			<MkUserList v-if="visible" :pagination="users" :extractor="(item) => item.user"/>
@@ -23,14 +23,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<div>{{ i18n.ts.nothing }}</div>
 			</div>
 		</div>
-	</MkSpacer>
-	<MkSpacer v-else-if="tab === 'timeline'" :contentMax="700">
+	</div>
+	<div class="_spacer" v-else-if="tab === 'timeline'" style="--MI_SPACER-w: 700px;">
 		<MkTimeline v-if="visible" ref="timeline" src="role" :role="props.roleId"/>
 		<div v-else-if="!visible" class="_fullinfo">
 			<img :src="infoImageUrl" draggable="false"/>
 			<div>{{ i18n.ts.nothing }}</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/scratchpad.vue b/packages/frontend/src/pages/scratchpad.vue
index ac1a7c6e1e..abd1e0e97f 100644
--- a/packages/frontend/src/pages/scratchpad.vue
+++ b/packages/frontend/src/pages/scratchpad.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div :class="$style.root">
 			<div class="_gaps_s">
 				<div :class="$style.editor" class="_panel">
@@ -50,7 +50,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				{{ i18n.ts.scratchpadDescription }}
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/search.vue b/packages/frontend/src/pages/search.vue
index 00e2b195d2..848ee72fb2 100644
--- a/packages/frontend/src/pages/search.vue
+++ b/packages/frontend/src/pages/search.vue
@@ -5,18 +5,18 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs" :swipable="true">
-	<MkSpacer v-if="tab === 'note'" :contentMax="800">
+	<div class="_spacer" v-if="tab === 'note'" style="--MI_SPACER-w: 800px;">
 		<div v-if="notesSearchAvailable || ignoreNotesSearchAvailable">
 			<XNote v-bind="props"/>
 		</div>
 		<div v-else>
 			<MkInfo warn>{{ i18n.ts.notesSearchNotAvailable }}</MkInfo>
 		</div>
-	</MkSpacer>
+	</div>
 
-	<MkSpacer v-else-if="tab === 'user'" :contentMax="800">
+	<div class="_spacer" v-else-if="tab === 'user'" style="--MI_SPACER-w: 800px;">
 		<XUser v-bind="props"/>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/settings/2fa.qrdialog.vue b/packages/frontend/src/pages/settings/2fa.qrdialog.vue
index 03f973a33e..5bb125e67c 100644
--- a/packages/frontend/src/pages/settings/2fa.qrdialog.vue
+++ b/packages/frontend/src/pages/settings/2fa.qrdialog.vue
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		>
 			<template v-if="page === 0">
 				<div style="height: 100cqh; overflow: auto; text-align: center;">
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps">
 							<MkInfo><MkLink url="https://misskey-hub.net/docs/for-users/stepped-guides/how-to-enable-2fa/" target="_blank">{{ i18n.ts._2fa.moreDetailedGuideHere }}</MkLink></MkInfo>
 
@@ -50,12 +50,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkButton rounded @click="cancel">{{ i18n.ts.cancel }}</MkButton>
 							<MkButton primary rounded gradate @click="page++">{{ i18n.ts.continue }} <i class="ti ti-arrow-right"></i></MkButton>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 			<template v-else-if="page === 1">
 				<div style="height: 100cqh; overflow: auto;">
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps">
 							<div>{{ i18n.ts._2fa.step3Title }}</div>
 							<MkInput v-model="token" autocomplete="one-time-code" inputmode="numeric"></MkInput>
@@ -65,12 +65,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkButton rounded @click="page--"><i class="ti ti-arrow-left"></i> {{ i18n.ts.goBack }}</MkButton>
 							<MkButton primary rounded gradate @click="tokenDone">{{ i18n.ts.continue }} <i class="ti ti-arrow-right"></i></MkButton>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 			<template v-else-if="page === 2">
 				<div style="height: 100cqh; overflow: auto;">
-					<MkSpacer :marginMin="20" :marginMax="28">
+					<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 						<div class="_gaps">
 							<div style="text-align: center;">{{ i18n.ts._2fa.setupCompleted }}🎉</div>
 							<div style="text-align: center;">{{ i18n.ts._2fa.step4 }}</div>
@@ -97,7 +97,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<div class="_buttonsCenter" style="margin-top: 16px;">
 							<MkButton primary rounded gradate @click="allDone">{{ i18n.ts.done }}</MkButton>
 						</div>
-					</MkSpacer>
+					</div>
 				</div>
 			</template>
 		</Transition>
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue b/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
index 0f02d95d71..be1b7ded2c 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template #header>{{ i18n.ts.avatarDecorations }}</template>
 
 	<div>
-		<MkSpacer :marginMin="20" :marginMax="28">
+		<div class="_spacer" style="--MI_SPACER-min: 20px; --MI_SPACER-max: 28px;">
 			<div style="text-align: center;">
 				<div :class="$style.name">{{ decoration.name }}</div>
 				<MkAvatar style="width: 64px; height: 64px; margin-bottom: 20px;" :user="$i" :decorations="decorationsForPreview" forceShowDecoration/>
@@ -33,7 +33,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<template #label>{{ i18n.ts.flip }}</template>
 				</MkSwitch>
 			</div>
-		</MkSpacer>
+		</div>
 
 		<div :class="$style.footer" class="_buttonsCenter">
 			<MkButton v-if="usingIndex != null" primary rounded @click="update"><i class="ti ti-check"></i> {{ i18n.ts.update }}</MkButton>
diff --git a/packages/frontend/src/pages/settings/index.vue b/packages/frontend/src/pages/settings/index.vue
index a11ae2a6f6..61e3ca8b6c 100644
--- a/packages/frontend/src/pages/settings/index.vue
+++ b/packages/frontend/src/pages/settings/index.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :tabs="headerTabs" :actions="headerActions">
-	<MkSpacer :contentMax="900" :marginMin="20" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 900px; --MI_SPACER-min: 20px; --MI_SPACER-max: 32px;">
 		<div ref="el" class="vvcocwet" :class="{ wide: !narrow }">
 			<div class="body">
 				<div v-if="!narrow || currentPage?.route.name == null" class="nav">
@@ -25,7 +25,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/share.vue b/packages/frontend/src/pages/share.vue
index 57afdb9121..71f572657b 100644
--- a/packages/frontend/src/pages/share.vue
+++ b/packages/frontend/src/pages/share.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<MkPostForm
 			v-if="state === 'writing'"
 			fixed
@@ -24,7 +24,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkButton primary @click="close">{{ i18n.ts.close }}</MkButton>
 			<MkButton @click="goToMisskey">{{ i18n.ts.goToMisskey }}</MkButton>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/tag.vue b/packages/frontend/src/pages/tag.vue
index f67777be4e..e1dffd4f2d 100644
--- a/packages/frontend/src/pages/tag.vue
+++ b/packages/frontend/src/pages/tag.vue
@@ -5,14 +5,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<MkNotes ref="notes" class="" :pagination="pagination"/>
-	</MkSpacer>
+	</div>
 	<template v-if="$i" #footer>
 		<div :class="$style.footer">
-			<MkSpacer :contentMax="800" :marginMin="16" :marginMax="16">
+			<div class="_spacer" style="--MI_SPACER-w: 800px; --MI_SPACER-min: 16px; --MI_SPACER-max: 16px;">
 				<MkButton rounded primary :class="$style.button" @click="post()"><i class="ti ti-pencil"></i>{{ i18n.ts.postToHashtag }}</MkButton>
-			</MkSpacer>
+			</div>
 		</div>
 	</template>
 </PageWithHeader>
diff --git a/packages/frontend/src/pages/theme-editor.vue b/packages/frontend/src/pages/theme-editor.vue
index b16edffc29..e8007b9779 100644
--- a/packages/frontend/src/pages/theme-editor.vue
+++ b/packages/frontend/src/pages/theme-editor.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 800px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<div class="cwepdizn _gaps_m">
 			<MkFolder :defaultOpen="true">
 				<template #label>{{ i18n.ts.backgroundColor }}</template>
@@ -67,7 +67,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkFolder>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/timeline.vue b/packages/frontend/src/pages/timeline.vue
index af28d3decd..efe2689579 100644
--- a/packages/frontend/src/pages/timeline.vue
+++ b/packages/frontend/src/pages/timeline.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader ref="pageComponent" v-model:tab="src" :actions="headerActions" :tabs="$i ? headerTabs : headerTabsWhenNotLogin" :swipable="true" :displayMyAvatar="true">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<MkInfo v-if="isBasicTimeline(src) && !store.r.timelineTutorials.value[src]" style="margin-bottom: var(--MI-margin);" closable @close="closeTutorial()">
 			{{ i18n.ts._timelineDescription[src] }}
 		</MkInfo>
@@ -24,7 +24,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			:sound="true"
 			@queue="queueUpdated"
 		/>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/user-list-timeline.vue b/packages/frontend/src/pages/user-list-timeline.vue
index 53081b0f16..e05e35d533 100644
--- a/packages/frontend/src/pages/user-list-timeline.vue
+++ b/packages/frontend/src/pages/user-list-timeline.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800">
+	<div class="_spacer" style="--MI_SPACER-w: 800px;">
 		<div ref="rootEl">
 			<div v-if="queue > 0" :class="$style.new"><button class="_buttonPrimary" :class="$style.newButton" @click="top()">{{ i18n.ts.newNoteRecived }}</button></div>
 			<div :class="$style.tl">
@@ -18,7 +18,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				/>
 			</div>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/user-tag.vue b/packages/frontend/src/pages/user-tag.vue
index d1dc721a4b..959d449e40 100644
--- a/packages/frontend/src/pages/user-tag.vue
+++ b/packages/frontend/src/pages/user-tag.vue
@@ -5,11 +5,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader>
-	<MkSpacer :contentMax="1200">
+	<div class="_spacer" style="--MI_SPACER-w: 1200px;">
 		<div class="_gaps_s">
 			<MkUserList :pagination="tagUsers"/>
 		</div>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/user/achievements.vue b/packages/frontend/src/pages/user/achievements.vue
index 8f13e959e1..d40998c307 100644
--- a/packages/frontend/src/pages/user/achievements.vue
+++ b/packages/frontend/src/pages/user/achievements.vue
@@ -4,9 +4,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="1200">
+<div class="_spacer" style="--MI_SPACER-w: 1200px;">
 	<MkAchievements :user="user" :withLocked="false" :withDescription="$i != null && (props.user.id === $i.id)"/>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/activity.vue b/packages/frontend/src/pages/user/activity.vue
index 994bd52705..a49b82e630 100644
--- a/packages/frontend/src/pages/user/activity.vue
+++ b/packages/frontend/src/pages/user/activity.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<div class="_gaps">
 		<MkFoldableSection class="item">
 			<template #header><i class="ti ti-activity"></i> Heatmap</template>
@@ -23,7 +23,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<XPv :user="user"/>
 		</MkFoldableSection>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/clips.vue b/packages/frontend/src/pages/user/clips.vue
index 38ce78e8d5..c980c83a26 100644
--- a/packages/frontend/src/pages/user/clips.vue
+++ b/packages/frontend/src/pages/user/clips.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<div>
 		<MkPagination v-slot="{items}" ref="list" :pagination="pagination">
 			<MkA v-for="item in items" :key="item.id" :to="`/clips/${item.id}`" :class="$style.item" class="_panel _margin">
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkA>
 		</MkPagination>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/files.vue b/packages/frontend/src/pages/user/files.vue
index b6c7c1c777..91ebcad0b2 100644
--- a/packages/frontend/src/pages/user/files.vue
+++ b/packages/frontend/src/pages/user/files.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-	<MkSpacer :contentMax="1100">
+	<div class="_spacer" style="--MI_SPACER-w: 1100px;">
 		<div :class="$style.root">
 			<MkPagination v-slot="{items}" :pagination="pagination">
 				<div :class="$style.stream">
@@ -12,7 +12,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/flashs.vue b/packages/frontend/src/pages/user/flashs.vue
index b3313476e1..16957a5a2b 100644
--- a/packages/frontend/src/pages/user/flashs.vue
+++ b/packages/frontend/src/pages/user/flashs.vue
@@ -4,11 +4,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<MkPagination v-slot="{items}" ref="list" :pagination="pagination">
 		<MkFlashPreview v-for="flash in items" :key="flash.id" :flash="flash" class="_margin"/>
 	</MkPagination>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/followers.vue b/packages/frontend/src/pages/user/followers.vue
index 4379d4680a..7229102701 100644
--- a/packages/frontend/src/pages/user/followers.vue
+++ b/packages/frontend/src/pages/user/followers.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="1000">
+	<div class="_spacer" style="--MI_SPACER-w: 1000px;">
 		<Transition name="fade" mode="out-in">
 			<div v-if="user">
 				<XFollowList :user="user" type="followers"/>
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkError v-else-if="error" @retry="fetchUser()"/>
 			<MkLoading v-else/>
 		</Transition>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/user/following.vue b/packages/frontend/src/pages/user/following.vue
index 5ed66b5afd..9a9e74ffa6 100644
--- a/packages/frontend/src/pages/user/following.vue
+++ b/packages/frontend/src/pages/user/following.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="1000">
+	<div class="_spacer" style="--MI_SPACER-w: 1000px;">
 		<Transition name="fade" mode="out-in">
 			<div v-if="user">
 				<XFollowList :user="user" type="following"/>
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkError v-else-if="error" @retry="fetchUser()"/>
 			<MkLoading v-else/>
 		</Transition>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>
 
diff --git a/packages/frontend/src/pages/user/gallery.vue b/packages/frontend/src/pages/user/gallery.vue
index 0bc5628528..11874bfd87 100644
--- a/packages/frontend/src/pages/user/gallery.vue
+++ b/packages/frontend/src/pages/user/gallery.vue
@@ -4,13 +4,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<MkPagination v-slot="{items}" :pagination="pagination">
 		<div :class="$style.root">
 			<MkGalleryPostPreview v-for="post in items" :key="post.id" :post="post" class="post"/>
 		</div>
 	</MkPagination>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/home.vue b/packages/frontend/src/pages/user/home.vue
index efa3e8f947..50bb1de24f 100644
--- a/packages/frontend/src/pages/user/home.vue
+++ b/packages/frontend/src/pages/user/home.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="narrow ? 800 : 1100">
+<div class="_spacer" :style="{ '--MI_SPACER-w': narrow ? '800px' : '1100px' }">
 	<div ref="rootEl" class="ftskorzw" :class="{ wide: !narrow }" style="container-type: inline-size;">
 		<div class="main _gaps">
 			<!-- TODO -->
@@ -155,7 +155,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<XActivity :key="user.id" :user="user"/>
 		</div>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/index.vue b/packages/frontend/src/pages/user/index.vue
index 2adc3925fa..d6e477d0ae 100644
--- a/packages/frontend/src/pages/user/index.vue
+++ b/packages/frontend/src/pages/user/index.vue
@@ -7,9 +7,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 <PageWithHeader v-model:tab="tab" :tabs="headerTabs" :actions="headerActions" :swipable="true">
 	<div v-if="user">
 		<XHome v-if="tab === 'home'" :user="user" @unfoldFiles="() => { tab = 'files'; }"/>
-		<MkSpacer v-else-if="tab === 'notes'" :contentMax="800" style="padding-top: 0">
+		<div v-else-if="tab === 'notes'" class="_spacer" style="--MI_SPACER-w: 800px;">
 			<XTimeline :user="user"/>
-		</MkSpacer>
+		</div>
 		<XFiles v-else-if="tab === 'files'" :user="user"/>
 		<XActivity v-else-if="tab === 'activity'" :user="user"/>
 		<XAchievements v-else-if="tab === 'achievements'" :user="user"/>
diff --git a/packages/frontend/src/pages/user/lists.vue b/packages/frontend/src/pages/user/lists.vue
index 00de3e9132..18cbf9d017 100644
--- a/packages/frontend/src/pages/user/lists.vue
+++ b/packages/frontend/src/pages/user/lists.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <MkStickyContainer>
-	<MkSpacer :contentMax="700">
+	<div class="_spacer" style="--MI_SPACER-w: 700px;">
 		<div>
 			<MkPagination v-slot="{items}" ref="pagingComponent" :pagination="pagination" class="lists">
 				<MkA v-for="list in items" :key="list.id" class="_panel" :class="$style.list" :to="`/list/${ list.id }`">
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkA>
 			</MkPagination>
 		</div>
-	</MkSpacer>
+	</div>
 </MkStickyContainer>
 </template>
 
@@ -23,7 +23,6 @@ import {} from 'vue';
 import * as Misskey from 'misskey-js';
 import MkPagination from '@/components/MkPagination.vue';
 import MkStickyContainer from '@/components/global/MkStickyContainer.vue';
-import MkSpacer from '@/components/global/MkSpacer.vue';
 import MkAvatars from '@/components/MkAvatars.vue';
 
 const props = defineProps<{
diff --git a/packages/frontend/src/pages/user/pages.vue b/packages/frontend/src/pages/user/pages.vue
index 6375bf7d74..fe6141285e 100644
--- a/packages/frontend/src/pages/user/pages.vue
+++ b/packages/frontend/src/pages/user/pages.vue
@@ -4,11 +4,11 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<MkPagination v-slot="{items}" ref="list" :pagination="pagination">
 		<MkPagePreview v-for="page in items" :key="page.id" :page="page" class="_margin"/>
 	</MkPagination>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/raw.vue b/packages/frontend/src/pages/user/raw.vue
index e6e66bd6af..f0e675b913 100644
--- a/packages/frontend/src/pages/user/raw.vue
+++ b/packages/frontend/src/pages/user/raw.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="600" :marginMin="16" :marginMax="32">
+<div class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 	<div class="_gaps_m">
 		<div :class="$style.userMInfoRoot">
 			<MkAvatar :class="$style.userMInfoAvatar" :user="user" indicator link preview/>
@@ -35,7 +35,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkObjectView tall :value="user"></MkObjectView>
 		</FormSection>
 	</div>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/user/reactions.vue b/packages/frontend/src/pages/user/reactions.vue
index 7168778e12..9b7a3bc3bd 100644
--- a/packages/frontend/src/pages/user/reactions.vue
+++ b/packages/frontend/src/pages/user/reactions.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<MkSpacer :contentMax="700">
+<div class="_spacer" style="--MI_SPACER-w: 700px;">
 	<MkPagination v-slot="{items}" ref="list" :pagination="pagination">
 		<div v-for="item in items" :key="item.id" :to="`/clips/${item.id}`" class="_panel _margin">
 			<div :class="$style.header">
@@ -15,7 +15,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkNote :key="item.id" :note="item.note"/>
 		</div>
 	</MkPagination>
-</MkSpacer>
+</div>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/style.scss b/packages/frontend/src/style.scss
index 9a3a43bdc3..03dfbfe94b 100644
--- a/packages/frontend/src/style.scss
+++ b/packages/frontend/src/style.scss
@@ -175,6 +175,30 @@ rt {
 	text-align: center;
 }
 
+._spacer {
+	width: 100%;
+	max-width: calc(min(var(--MI_SPACER-w, 100%), 100%) - (var(--MI_SPACER-max, 24px) * 2));
+	margin: var(--MI_SPACER-max, 24px) auto;
+	container-type: inline-size;
+
+	/* 子に継承させない */
+	--MI_SPACER-w: initial;
+	--MI_SPACER-min: initial;
+	--MI_SPACER-max: initial;
+}
+
+._forceShrinkSpacer ._spacer {
+	max-width: calc(min(var(--MI_SPACER-w, 100%), 100%) - (var(--MI_SPACER-min, 12px) * 2));
+	margin: var(--MI_SPACER-min, 12px) auto;
+}
+
+@container (max-width: 450px) {
+	._spacer {
+		max-width: calc(min(var(--MI_SPACER-w, 100%), 100%) - (var(--MI_SPACER-min, 12px) * 2));
+		margin: var(--MI_SPACER-min, 12px) auto;
+	}
+}
+
 ._pageContainer {
 	container-type: size;
 	contain: strict;
diff --git a/packages/frontend/src/ui/deck/column.vue b/packages/frontend/src/ui/deck/column.vue
index b6e4c7dc7c..2085c73e03 100644
--- a/packages/frontend/src/ui/deck/column.vue
+++ b/packages/frontend/src/ui/deck/column.vue
@@ -5,6 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div
+	class="_forceShrinkSpacer"
 	:class="[$style.root, { [$style.paged]: isMainColumn, [$style.naked]: naked, [$style.active]: active, [$style.draghover]: draghover, [$style.dragging]: dragging, [$style.dropready]: dropready, [$style.withWallpaper]: withWallpaper }]"
 	@dragover.prevent.stop="onDragover"
 	@dragleave="onDragleave"
@@ -53,7 +54,6 @@ import { DI } from '@/di.js';
 
 provide('shouldHeaderThin', true);
 provide('shouldOmitHeaderTitle', true);
-provide(DI.forceSpacerMin, true);
 
 const withWallpaper = prefer.s['deck.wallpaper'] != null;
 
diff --git a/packages/frontend/src/ui/universal.vue b/packages/frontend/src/ui/universal.vue
index 940cf72e28..31c3bdff54 100644
--- a/packages/frontend/src/ui/universal.vue
+++ b/packages/frontend/src/ui/universal.vue
@@ -4,7 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<div :class="$style.root">
+<div :class="[$style.root, { '_forceShrinkSpacer': deviceKind === 'smartphone' }]">
 	<XSidebar v-if="!isMobile" :class="$style.sidebar" :showWidgetButton="!isDesktop" @widgetButtonClick="widgetsShowing = true"/>
 
 	<div :class="$style.contents" @contextmenu.stop="onContextmenu">