diff --git a/src/client/pages/announcements.vue b/src/client/pages/announcements.vue
index 327fa9b1f6..429d183d1e 100644
--- a/src/client/pages/announcements.vue
+++ b/src/client/pages/announcements.vue
@@ -1,7 +1,7 @@
 <template>
-<div class="_section">
+<MkSpacer :content-max="800">
 	<MkPagination :pagination="pagination" #default="{items}" class="ruryvtyk _content">
-		<section class="_card announcement _gap" v-for="(announcement, i) in items" :key="announcement.id">
+		<section class="_card announcement" v-for="(announcement, i) in items" :key="announcement.id">
 			<div class="_title"><span v-if="$i && !announcement.isRead">🆕 </span>{{ announcement.title }}</div>
 			<div class="_content">
 				<Mfm :text="announcement.text"/>
@@ -12,7 +12,7 @@
 			</div>
 		</section>
 	</MkPagination>
-</div>
+</MkSpacer>
 </template>
 
 <script lang="ts">
@@ -58,6 +58,10 @@ export default defineComponent({
 <style lang="scss" scoped>
 .ruryvtyk {
 	> .announcement {
+		&:not(:last-child) {
+			margin-bottom: var(--margin);
+		}
+
 		> ._content {
 			> img {
 				display: block;
diff --git a/src/client/pages/featured.vue b/src/client/pages/featured.vue
index afe3d62638..50df26bfb1 100644
--- a/src/client/pages/featured.vue
+++ b/src/client/pages/featured.vue
@@ -1,7 +1,7 @@
 <template>
-<div class="_section">
-	<XNotes class="_content" ref="notes" :pagination="pagination" @before="before" @after="after"/>
-</div>
+<MkSpacer :content-max="800">
+	<XNotes ref="notes" :pagination="pagination" @before="before" @after="after"/>
+</MkSpacer>
 </template>
 
 <script lang="ts">
diff --git a/src/client/pages/mentions.vue b/src/client/pages/mentions.vue
index 00c6a3d4d0..04682a856a 100644
--- a/src/client/pages/mentions.vue
+++ b/src/client/pages/mentions.vue
@@ -1,7 +1,7 @@
 <template>
-<div class="_section">
-	<XNotes class="_content" :pagination="pagination" @before="before()" @after="after()"/>
-</div>
+<MkSpacer :content-max="800">
+	<XNotes :pagination="pagination" @before="before()" @after="after()"/>
+</MkSpacer>
 </template>
 
 <script lang="ts">
diff --git a/src/client/pages/messages.vue b/src/client/pages/messages.vue
index 15cd9546be..e3d668cf45 100644
--- a/src/client/pages/messages.vue
+++ b/src/client/pages/messages.vue
@@ -1,7 +1,7 @@
 <template>
-<div>
+<MkSpacer :content-max="800">
 	<XNotes :pagination="pagination" @before="before()" @after="after()"/>
-</div>
+</MkSpacer>
 </template>
 
 <script lang="ts">
diff --git a/src/client/style.scss b/src/client/style.scss
index 0275efa8be..d77cdacf7b 100644
--- a/src/client/style.scss
+++ b/src/client/style.scss
@@ -348,6 +348,7 @@ hr {
 	contain: layout; // ふき出しがボックスから飛び出て表示されるようなデザインをする場合もあるので paint は contain することができない
 }
 
+// TODO: 廃止
 ._monolithic_ {
 	._section:not(:empty) {
 		box-sizing: border-box;