HTML 代码
<header class="bg-yellow-400 text-black sticky top-0 z-50 border-b-4 border-black dark:bg-purple-800 dark:text-white dark:border-white">
<nav class="container mx-auto px-6 py-4 flex justify-between items-center">
<div class="text-2xl font-bold uppercase tracking-tighter">Brutal Nav</div>
<div class="hidden md:flex space-x-6">
<a href="#" class="text-black hover:underline dark:text-white">Home</a>
<a href="#" class="text-black hover:underline dark:text-white">About</a>
<a href="#" class="text-black hover:underline dark:text-white">Services</a>
<a href="#" class="text-black hover:underline dark:text-white">Contact</a>
</div>
<button class="md:hidden text-black dark:text-white focus:outline-none">
<svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16m-4 6h4"></path></svg>
</button>
</nav>
</header>