diff --git a/packages/client/src/pages/welcome.setup.vue b/packages/client/src/pages/welcome.setup.vue
index 3dca5b3e78..f6bf6540fc 100644
--- a/packages/client/src/pages/welcome.setup.vue
+++ b/packages/client/src/pages/welcome.setup.vue
@@ -1,22 +1,22 @@
 <template>
 <form class="mk-setup" @submit.prevent="submit()">
 	<h1>Welcome to Misskey!</h1>
-	<div>
+	<div class="_formRoot">
 		<p>{{ $ts.intro }}</p>
-		<MkInput v-model="username" pattern="^[a-zA-Z0-9_]{1,20}$" spellcheck="false" required data-cy-admin-username>
+		<MkInput v-model="username" pattern="^[a-zA-Z0-9_]{1,20}$" spellcheck="false" required data-cy-admin-username class="_formBlock">
 			<template #label>{{ $ts.username }}</template>
 			<template #prefix>@</template>
 			<template #suffix>@{{ host }}</template>
 		</MkInput>
-		<MkInput v-model="password" type="password" data-cy-admin-password>
+		<MkInput v-model="password" type="password" data-cy-admin-password class="_formBlock">
 			<template #label>{{ $ts.password }}</template>
 			<template #prefix><i class="fas fa-lock"></i></template>
 		</MkInput>
-		<footer>
+		<div class="bottom _formBlock">
 			<MkButton primary type="submit" :disabled="submitting" data-cy-admin-ok>
 				{{ submitting ? $ts.processing : $ts.done }}<MkEllipsis v-if="submitting"/>
 			</MkButton>
-		</footer>
+		</div>
 	</div>
 </form>
 </template>
@@ -92,7 +92,7 @@ export default defineComponent({
 			margin-top: 0;
 		}
 
-		> footer {
+		> .bottom {
 			> * {
 				margin: 0 auto;
 			}