サイドバーナビゲーション

<div class="flex h-screen bg-gray-100 dark:bg-gray-800">

    <!-- Sidebar -->
    <div class="w-64 bg-teal-500 dark:bg-teal-700 text-white flex flex-col">
        <div class="p-4 text-center text-2xl font-bold">Dashboard</div>
        <nav class="mt-6">
            <a href="#" class="block py-2 px-4 text-teal-100 hover:bg-teal-600 dark:hover:bg-teal-800 transition duration-300 ease-in-out">Home</a>
            <a href="#" class="block py-2 px-4 text-teal-100 hover:bg-teal-600 dark:hover:bg-teal-800 transition duration-300 ease-in-out">Analytics</a>
            <a href="#" class="block py-2 px-4 text-teal-100 hover:bg-teal-600 dark:hover:bg-teal-800 transition duration-300 ease-in-out">Reports</a>
            <a href="#" class="block py-2 px-4 text-teal-100 hover:bg-teal-600 dark:hover:bg-teal-800 transition duration-300 ease-in-out">Settings</a>
        </nav>
    </div>

    <!-- Content area -->
    <div class="flex-1 p-10 text-gray-800 dark:text-gray-200">
        <h1 class="text-3xl font-bold mb-6">Welcome to the Dashboard</h1>
        <p>This is the main content area.</p>
    </div>

</div>