diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index 40f11fa344..d95f8de311 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -46,7 +46,7 @@
 		<div :class="$style.main">
 			<MkNoteHeader :class="$style.header" :note="appearNote" :mini="true"/>
 			<MkInstanceTicker v-if="showTicker" :class="$style.ticker" :instance="appearNote.user.instance"/>
-			<div>
+			<div style="container-type: inline-size;">
 				<p v-if="appearNote.cw != null" :class="$style.cw">
 					<Mfm v-if="appearNote.cw != ''" style="margin-right: 8px;" :text="appearNote.cw" :author="appearNote.user" :i="$i"/>
 					<MkCwButton v-model="showContent" :note="appearNote"/>
diff --git a/packages/frontend/src/components/MkNoteDetailed.vue b/packages/frontend/src/components/MkNoteDetailed.vue
index 5e1e14760c..0d6d329d98 100644
--- a/packages/frontend/src/components/MkNoteDetailed.vue
+++ b/packages/frontend/src/components/MkNoteDetailed.vue
@@ -587,6 +587,7 @@ if (appearNote.replyId) {
 
 		> .main {
 			> .body {
+				container-type: inline-size;
 
 				> .cw {
 					cursor: default;