chore(client): remove unused class

packages/client/src/components/page-preview.vue

 <template>
-<MkA :to="`/@${page.user.username}/pages/${page.name}`" class="vhpxefrj _block _isolated" tabindex="-1">
+<MkA :to="`/@${page.user.username}/pages/${page.name}`" class="vhpxefrj _block" tabindex="-1">
 	<div v-if="page.eyeCatchingImage" class="thumbnail" :style="`background-image: url('${page.eyeCatchingImage.thumbnailUrl}')`"></div>
 	<article>
 		<header>
@@ -23,12 +23,12 @@ export default defineComponent({
 	props: {
 		page: {
 			type: Object,
-			required: true
+			required: true,
 		},
 	},
 	methods: {
-		userName
-	}
+		userName,
+	},
 });
 </script>
 

packages/client/src/pages/mfm-cheat-sheet.vue

@@ -2,7 +2,7 @@
 <MkStickyContainer>
 	<template #header><MkPageHeader/></template>
 	<div class="mwysmxbg">
-		<div class="_isolated">{{ $ts._mfm.intro }}</div>
+		<div>{{ $ts._mfm.intro }}</div>
 		<div class="section _block">
 			<div class="title">{{ $ts._mfm.mention }}</div>
 			<div class="content">

packages/client/src/pages/user/follow-list.vue

 <template>
 <div>
 	<MkPagination v-slot="{items}" ref="list" :pagination="type === 'following' ? followingPagination : followersPagination" class="mk-following-or-followers">
-		<div class="users _isolated">
+		<div class="users">
 			<MkUserInfo v-for="user in items.map(x => type === 'following' ? x.followee : x.follower)" :key="user.id" class="user" :user="user"/>
 		</div>
 	</MkPagination>