diff --git a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.vue b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.vue
index 7b2ae03f5..28a0d1c98 100644
--- a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.vue
+++ b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.vue
@@ -1,5 +1,5 @@
 <template>
-<MfmCore :text="text" :plain="plain" :nowrap="nowrap" :author="author" :is-note="isNote" class="havbbuyv" :class="{ nowrap }"/>
+<MfmCore :text="text" :plain="plain" :nowrap="nowrap" :author="author" :is-note="isNote" :class="[$style.root, { [$style.nowrap]: nowrap }]"/>
 </template>
 
 <script lang="ts" setup>
@@ -157,8 +157,8 @@ const props = withDefaults(defineProps<{
 }
 </style>
 
-<style lang="scss" scoped>
-.havbbuyv {
+<style lang="scss" module>
+.root {
 	white-space: pre-wrap;
 
 	&.nowrap {
@@ -167,24 +167,5 @@ const props = withDefaults(defineProps<{
 		overflow: hidden;
 		text-overflow: ellipsis;
 	}
-
-	::v-deep(.quote) {
-		display: block;
-		margin: 8px;
-		padding: 6px 0 6px 12px;
-		color: var(--fg);
-		border-left: solid 3px var(--fg);
-		opacity: 0.7;
-	}
-
-	::v-deep(pre) {
-		font-size: 0.8em;
-	}
-
-	> ::v-deep(code) {
-		font-size: 0.8em;
-		word-break: break-all;
-		padding: 4px 6px;
-	}
 }
 </style>
diff --git a/packages/frontend/src/components/mfm.ts b/packages/frontend/src/components/mfm.ts
index 2dbb5217b..865ec1953 100644
--- a/packages/frontend/src/components/mfm.ts
+++ b/packages/frontend/src/components/mfm.ts
@@ -12,6 +12,15 @@ import MkA from '@/components/global/MkA.vue';
 import { host } from '@/config';
 import { MFM_TAGS } from '@/scripts/mfm-tags';
 
+const QUOTE_STYLE = `
+display: block;
+margin: 8px;
+padding: 6px 0 6px 12px;
+color: var(--fg);
+border-left: solid 3px var(--fg);
+opacity: 0.7;
+`.split('\n').join(' ');
+
 export default defineComponent({
 	props: {
 		text: {
@@ -276,11 +285,11 @@ export default defineComponent({
 				case 'quote': {
 					if (!this.nowrap) {
 						return [h('div', {
-							class: 'quote',
+							style: QUOTE_STYLE,
 						}, genEl(token.children))];
 					} else {
 						return [h('span', {
-							class: 'quote',
+							style: QUOTE_STYLE,
 						}, genEl(token.children))];
 					}
 				}