HTML 代码
<div class="flex items-center justify-center h-screen bg-gray-100 dark:bg-gray-800">
<div class="flex space-x-2 animate-pulse">
<div class="w-4 h-4 bg-gray-400 rounded-full dark:bg-gray-600 shadow-inner dark:shadow-inner-dark"></div>
<div class="w-4 h-4 bg-gray-400 rounded-full dark:bg-gray-600 shadow-inner dark:shadow-inner-dark"></div>
<div class="w-4 h-4 bg-gray-400 rounded-full dark:bg-gray-600 shadow-inner dark:shadow-inner-dark"></div>
</div>
</div>