perf(frontend): use css-native implementation for spacer rather than vue component

21 files changed, 60 insertions, 123 deletions

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;