HTML 代码
<div class="relative flex items-center justify-center">
<button class="text-gray-800 dark:text-gray-200 focus:outline-none">Hover me</button>
<div class="absolute bottom-full mb-2 hidden px-3 py-2 text-sm font-semibold text-white bg-white bg-opacity-10 backdrop-filter backdrop-blur-lg rounded-md shadow-sm dark:bg-gray-800 dark:bg-opacity-20 dark:backdrop-filter dark:backdrop-blur-lg group-hover:block">Tooltip content</div>
</div>