Componenti di miglioramento della navigazione

<nav class="bg-white dark:bg-gray-800 shadow-lg">
    <div class="max-w-7xl mx-auto px-2 sm:px-6 lg:px-8">
        <div class="relative flex items-center justify-between h-16">
            <div class="absolute inset-y-0 left-0 flex items-center sm:hidden">
                <!-- Mobile menu button -->
                <button class="inline-flex items-center justify-center p-2 rounded-md text-gray-400 hover:text-gray-500 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-gray-800 focus:ring-white" aria-controls="mobile-menu" aria-expanded="false">
                    <span class="sr-only">Open main menu</span>
                    <svg class="block h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16m-7 6h7" />
                    </svg>
                    <svg class="hidden h-6 w-6" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
                    </svg>
                </button>
            </div>
            <div class="flex-1 flex items-center justify-center sm:items-stretch sm:justify-start">
                <div class="flex-shrink-0">
                    <img class="h-8 w-8" src="https://picsum.photos/40/40" alt="Logo" />
                </div>
                <div class="hidden sm:block sm:ml-6">
                    <div class="flex space-x-4">
                        <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium">Home</a>
                        <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium">About</a>
                        <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium">Services</a>
                        <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white px-3 py-2 rounded-md text-sm font-medium">Contact</a>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="sm:hidden" id="mobile-menu">
        <div class="px-2 pt-2 pb-3 space-y-1">
            <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium">Home</a>
            <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium">About</a>
            <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium">Services</a>
            <a href="#" class="text-gray-900 hover:bg-gray-300 hover:text-black dark:text-gray-100 dark:hover:bg-gray-700 dark:hover:text-white block px-3 py-2 rounded-md text-base font-medium">Contact</a>
        </div>
    </div>
</nav>

<section class="bg-gray-50 dark:bg-gray-900">
    <div class="max-w-7xl mx-auto py-6 px-4 sm:px-6 lg:px-8">
        <h1 class="text-3xl font-semibold text-gray-900 dark:text-white">Welcome to Our Website</h1>
        <div class="mt-4 grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
            <div class="bg-white dark:bg-gray-800 rounded-lg shadow-md p-4">
                <img class="rounded-md" src="https://picsum.photos/500/300" alt="Placeholder Image" />
                <h2 class="mt-2 text-lg font-medium text-gray-900 dark:text-white">Section 1</h2>
                <p class="text-gray-600 dark:text-gray-300">This is a description for section 1.</p>
            </div>
            <div class="bg-white dark:bg-gray-800 rounded-lg shadow-md p-4">
                <img class="rounded-md" src="https://picsum.photos/500/301" alt="Placeholder Image" />
                <h2 class="mt-2 text-lg font-medium text-gray-900 dark:text-white">Section 2</h2>
                <p class="text-gray-600 dark:text-gray-300">This is a description for section 2.</p>
            </div>
            <div class="bg-white dark:bg-gray-800 rounded-lg shadow-md p-4">
                <img class="rounded-md" src="https://picsum.photos/500/302" alt="Placeholder Image" />
                <h2 class="mt-2 text-lg font-medium text-gray-900 dark:text-white">Section 3</h2>
                <p class="text-gray-600 dark:text-gray-300">This is a description for section 3.</p>
            </div>
        </div>
    </div>
</section>