HTML 代码
<div class="relative inline-block text-left">
<div>
<button type="button" class="inline-flex justify-between items-center w-full rounded-lg border border-transparent shadow-lg px-4 py-2 bg-gradient-to-r from-blue-500 to-purple-500 text-white font-medium hover:shadow-xl focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 dark:bg-gradient-to-r from-blue-700 to-purple-700" id="menu-button" aria-expanded="true" aria-haspopup="true">
Menu
<svg class="-mr-1 ml-2 h-5 w-5" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" aria-hidden="true">
<path fill-rule="evenodd" d="M5.23 7.21a.75.75 0 011.06 0L10 10.47l3.71-3.26a.75.75 0 111.04 1.14l-4.25 3.67a.75.75 0 01-1.04 0l-4.25-3.67a.75.75 0 010-1.14z" clip-rule="evenodd" />
</svg>
</button>
</div>
<div class="absolute right-0 z-10 mt-2 w-56 rounded-md shadow-lg bg-white dark:bg-gray-800 ring-1 ring-black ring-opacity-5 focus:outline-none" role="menu" aria-orientation="vertical" aria-labelledby="menu-button" tabindex="-1">
<div class="py-1" role="none">
<a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-700" role="menuitem">Portfolio Item 1</a>
<a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-700" role="menuitem">Portfolio Item 2</a>
<a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-700" role="menuitem">Portfolio Item 3</a>
<a href="#" class="block px-4 py-2 text-sm text-gray-700 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-700" role="menuitem">Portfolio Item 4</a>
</div>
</div>
</div>