Componente di navigazione permanente

<header class="bg-white dark:bg-gray-800 shadow fixed top-0 left-0 right-0 z-50 transition-all duration-300">
    <div class="container mx-auto p-4 flex justify-between items-center">
        <div class="flex items-center">
            <img src="https://picsum.photos/50/50" alt="Logo" class="h-10 w-10 rounded-full">
            <h1 class="ml-2 text-xl font-semibold text-gray-800 dark:text-white">MyWebsite</h1>
        </div>
        <nav>
            <ul class="flex space-x-4">
                <li><a href="#" class="text-gray-800 dark:text-gray-200 hover:text-blue-500 dark:hover:text-blue-400 transition-colors duration-200">Home</a></li>
                <li><a href="#" class="text-gray-800 dark:text-gray-200 hover:text-blue-500 dark:hover:text-blue-400 transition-colors duration-200">About</a></li>
                <li><a href="#" class="text-gray-800 dark:text-gray-200 hover:text-blue-500 dark:hover:text-blue-400 transition-colors duration-200">Services</a></li>
                <li><a href="#" class="text-gray-800 dark:text-gray-200 hover:text-blue-500 dark:hover:text-blue-400 transition-colors duration-200">Contact</a></li>
            </ul>
        </nav>
    </div>
</header>

<main class="pt-16 bg-gray-100 dark:bg-gray-900">
    <section class="container mx-auto py-10">
        <h2 class="text-2xl font-bold text-gray-800 dark:text-white mb-6">Welcome to MyWebsite</h2>
        <p class="text-gray-700 dark:text-gray-300">This is a simple sticky navigation component built with Tailwind CSS. Scroll down to see the sticky effect in action.</p>
        <div class="mt-10 space-y-4">
            <div class="h-64 bg-gray-300 dark:bg-gray-700 rounded shadow">Placeholder for Content</div>
            <div class="h-64 bg-gray-300 dark:bg-gray-700 rounded shadow">Placeholder for Content</div>
            <div class="h-64 bg-gray-300 dark:bg-gray-700 rounded shadow">Placeholder for Content</div>
        </div>
    </section>
</main>