ナビゲーション強化コンポーネント

<nav class="bg-white dark:bg-gray-800 shadow-md">
    <div class="max-w-6xl mx-auto px-4 py-4 flex justify-between items-center">
        <div class="flex items-center space-x-4">
            <img src="https://picsum.photos/50" alt="Logo" class="h-10 w-10 rounded-full">
            <a href="#" class="text-gray-800 dark:text-white font-semibold text-lg">Brand</a>
        </div>
        <div class="hidden md:flex space-x-6">
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">Home</a>
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">About</a>
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">Services</a>
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">Contact</a>
        </div>
        <div class="md:hidden flex items-center">
            <button class="text-gray-800 dark:text-white focus:outline-none">
                <svg class="w-6 h-6" xmlns="http://www.w3.org/2000/svg" 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>
    </div>
    <div class="px-4 md:hidden">
        <div class="py-4 flex flex-col space-y-2">
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">Home</a>
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">About</a>
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">Services</a>
            <a href="#" class="text-gray-800 dark:text-white hover:text-blue-600">Contact</a>
        </div>
    </div>
</nav>

<div class="bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 p-8">
    <h1 class="text-3xl font-bold mb-4">Welcome to Our Website</h1>
    <p class="mb-4">This is a responsive navigation enhancement component made using Tailwind CSS with Material Design principles.</p>
    <img src="https://picsum.photos/800/400" alt="Placeholder" class="rounded shadow-lg mb-4">
    <div class="flex">
        <div class="w-1/3">
            <img src="https://randomuser.me/api/portraits/men/1.jpg" alt="Avatar" class="rounded-full h-16 w-16 shadow">
        </div>
        <div class="w-2/3 pl-4">
            <h2 class="text-xl font-semibold">John Doe</h2>
            <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean lacinia bibendum nulla sed consectetur.</p>
        </div>
    </div>
</div>