Mega Menu 组件

<header class="bg-gray-200 dark:bg-gray-800 p-6 rounded-lg shadow-lg">
  <nav class="container mx-auto flex justify-between items-center">
    <div class="flex items-center space-x-8">
      <h1 class="text-2xl font-bold text-gray-800 dark:text-gray-200">My Blog</h1>
      <div class="hidden md:flex space-x-6">
        <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-gray-100 transition">Home</a>
        <a href="#" class="text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-gray-100 transition">About</a>
        <div class="relative group">
          <button class="text-gray-600 dark:text-gray-300 focus:outline-none hover:text-gray-800 dark:hover:text-gray-100 transition">Categories</button>
          <div class="absolute left-0 z-10 hidden w-48 bg-white dark:bg-gray-700 rounded-lg shadow-lg group-hover:block">
            <ul class="py-2">
              <li><a href="#" class="block px-4 py-2 text-gray-800 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-600">Web Development</a></li>
              <li><a href="#" class="block px-4 py-2 text-gray-800 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-600">Design</a></li>
              <li><a href="#" class="block px-4 py-2 text-gray-800 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-600">Marketing</a></li>
            </ul>
          </div>
        </div>
      </div>
    </div>
    <div class="hidden md:block">
      <a href="#" class="relative inline-block text-gray-600 dark:text-gray-300 hover:text-gray-800 dark:hover:text-gray-100 transition">
        <img src="https://randomuser.me/api/portraits/men/1.jpg" alt="User Avatar" class="w-10 h-10 rounded-full border-2 border-gray-300 dark:border-gray-600">
      </a>
    </div>
    <div class="md:hidden">
      <button class="text-gray-600 dark:text-gray-300 focus:outline-none">
        <!-- Hamburger icon -->
        <svg class="w-6 h-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16m-7 6h7" />
        </svg>
      </button>
    </div>
  </nav>
</header>

<main class="bg-gray-200 dark:bg-gray-800 p-6 rounded-lg shadow-lg mt-4">
  <h2 class="text-xl font-semibold text-gray-800 dark:text-gray-200">Recent Posts</h2>
  <div class="grid grid-cols-1 md:grid-cols-2 gap-6 mt-4">
    <div class="bg-white dark:bg-gray-700 rounded-lg shadow-md p-4 hover:shadow-lg transition-shadow duration-300">
      <img src="https://picsum.photos/500/300?random=1" alt="Post Image" class="w-full h-32 rounded-lg object-cover">
      <h3 class="mt-2 text-lg font-semibold text-gray-800 dark:text-gray-200">Post Title 1</h3>
      <p class="text-gray-600 dark:text-gray-400">A short description of the post content goes here to entice readers.</p>
    </div>
    <div class="bg-white dark:bg-gray-700 rounded-lg shadow-md p-4 hover:shadow-lg transition-shadow duration-300">
      <img src="https://picsum.photos/500/300?random=2" alt="Post Image" class="w-full h-32 rounded-lg object-cover">
      <h3 class="mt-2 text-lg font-semibold text-gray-800 dark:text-gray-200">Post Title 2</h3>
      <p class="text-gray-600 dark:text-gray-400">A short description of the post content goes here to entice readers.</p>
    </div>
    <div class="bg-white dark:bg-gray-700 rounded-lg shadow-md p-4 hover:shadow-lg transition-shadow duration-300">
      <img src="https://picsum.photos/500/300?random=3" alt="Post Image" class="w-full h-32 rounded-lg object-cover">
      <h3 class="mt-2 text-lg font-semibold text-gray-800 dark:text-gray-200">Post Title 3</h3>
      <p class="text-gray-600 dark:text-gray-400">A short description of the post content goes here to entice readers.</p>
    </div>
    <div class="bg-white dark:bg-gray-700 rounded-lg shadow-md p-4 hover:shadow-lg transition-shadow duration-300">
      <img src="https://picsum.photos/500/300?random=4" alt="Post Image" class="w-full h-32 rounded-lg object-cover">
      <h3 class="mt-2 text-lg font-semibold text-gray-800 dark:text-gray-200">Post Title 4</h3>
      <p class="text-gray-600 dark:text-gray-400">A short description of the post content goes here to entice readers.</p>
    </div>
  </div>
</main>