refactor(frontend): use css modules

packages/frontend/src/pages/admin/announcements.vue

@@ -2,7 +2,7 @@
 <MkStickyContainer>
 	<template #header><XHeader :actions="headerActions" :tabs="headerTabs"/></template>
 	<MkSpacer :content-max="900">
-		<div class="ztgjmzrw _gaps_m">
+		<div class="_gaps_m">
 			<section v-for="announcement in announcements" class="">
 				<div class="_panel _gaps_m" style="padding: 24px;">
 					<MkInput v-model="announcement.title">
@@ -113,9 +113,3 @@ definePageMetadata({
 	icon: 'ti ti-speakerphone',
 });
 </script>
-
-<style lang="scss" scoped>
-.ztgjmzrw {
-	margin: var(--margin);
-}
-</style>