diff --git a/packages/frontend/src/pages/about.vue b/packages/frontend/src/pages/about.vue
index f35cbe8d5a..1ae11a53c2 100644
--- a/packages/frontend/src/pages/about.vue
+++ b/packages/frontend/src/pages/about.vue
@@ -1,11 +1,8 @@
-<!--
-SPDX-FileCopyrightText: syuilo and misskey-project
-SPDX-License-Identifier: AGPL-3.0-only
--->
-
 <template>
 <MkStickyContainer>
-	<template #header><MkPageHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs"/></template>
+	<template #header>
+		<MkPageHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs"/>
+	</template>
 	<MkHorizontalSwipe v-model:tab="tab" :tabs="headerTabs">
 		<MkSpacer v-if="tab === 'overview'" :contentMax="600" :marginMin="20">
 			<XOverview/>
@@ -13,12 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<MkSpacer v-else-if="tab === 'emojis'" :contentMax="1000" :marginMin="20">
 			<XEmojis/>
 		</MkSpacer>
-		<MkSpacer v-else-if="tab === 'federation'" :contentMax="1000" :marginMin="20">
-			<XFederation/>
-		</MkSpacer>
-		<MkSpacer v-else-if="tab === 'charts'" :contentMax="1000" :marginMin="20">
-			<MkInstanceStats/>
-		</MkSpacer>
+		<!-- 連携とチャートのタブは削除 -->
 	</MkHorizontalSwipe>
 </MkStickyContainer>
 </template>
@@ -32,8 +24,6 @@ import MkHorizontalSwipe from '@/components/MkHorizontalSwipe.vue';
 
 const XOverview = defineAsyncComponent(() => import('@/pages/about.overview.vue'));
 const XEmojis = defineAsyncComponent(() => import('@/pages/about.emojis.vue'));
-const XFederation = defineAsyncComponent(() => import('@/pages/about.federation.vue'));
-const MkInstanceStats = defineAsyncComponent(() => import('@/components/MkInstanceStats.vue'));
 
 const props = withDefaults(defineProps<{
 	initialTab?: string;
@@ -58,15 +48,7 @@ const headerTabs = computed(() => [{
 	key: 'emojis',
 	title: i18n.ts.customEmojis,
 	icon: 'ph-smiley ph-bold ph-lg',
-}, {
-	key: 'federation',
-	title: i18n.ts.federation,
-	icon: 'ti ti-whirl',
-}, {
-	key: 'charts',
-	title: i18n.ts.charts,
-	icon: 'ti ti-chart-line',
-}]);
+}]); // 連携とチャートを削除
 
 definePageMetadata(() => ({
 	title: i18n.ts.instanceInfo,
diff --git a/packages/frontend/src/ui/_common_/common.vue b/packages/frontend/src/ui/_common_/common.vue
index 442b6479dd..4fe53ae6a3 100644
--- a/packages/frontend/src/ui/_common_/common.vue
+++ b/packages/frontend/src/ui/_common_/common.vue
@@ -93,7 +93,6 @@ function onNotification(notification: Misskey.entities.Notification, isClient =
 if ($i) {
 	const connection = useStream().useChannel('main', null, 'UI');
 	connection.on('notification', onNotification);
-
 	globalEvents.on('clientNotification', notification => onNotification(notification, true));
 
 	//#region Listen message from SW
@@ -232,7 +231,7 @@ if ($i) {
 	right: 15px;
 	pointer-events: none;
 
-	&::before {
+	&:before {
 		content: "";
 		display: block;
 		width: 18px;