chore: independent page style update (#17176)

web/app/activate/page.tsx

@@ -1,25 +1,12 @@
 import React from 'react'
 import Header from '../signin/_header'
-import style from '../signin/page.module.css'
 import ActivateForm from './activateForm'
 import cn from '@/utils/classnames'
 
 const Activate = () => {
   return (
-    <div className={cn(
-      'bg-background-body',
-      style.background,
-      'flex min-h-screen w-full',
-      'sm:p-4 lg:p-8',
-      'gap-x-20',
-      'justify-center lg:justify-start',
-    )}>
-      <div className={
-        cn(
-          'flex w-full shrink-0 flex-col rounded-2xl bg-background-section-burn shadow',
-          'space-between',
-        )
-      }>
+    <div className={cn('flex min-h-screen w-full justify-center bg-background-default-burn p-6')}>
+      <div className={cn('flex w-full shrink-0 flex-col rounded-2xl border border-effects-highlight bg-background-default-subtle')}>
         <Header />
         <ActivateForm />
         <div className='px-8 py-6 text-sm font-normal text-text-tertiary'>