HTML 代码
<div class="flex items-center justify-center h-screen bg-gray-100 dark:bg-gray-900">
<div class="w-16 h-16 border-4 border-blue-400 border-solid rounded-full animate-spin border-t-transparent"></div>
</div><div class="flex items-center justify-center h-screen bg-gray-100 dark:bg-gray-900">
<div class="w-16 h-16 border-4 border-blue-400 border-solid rounded-full animate-spin border-t-transparent"></div>
</div>