导航栏组件

<nav class="bg-blue-600 dark:bg-gray-800 shadow-md">
    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
        <div class="flex justify-between h-16">
            <div class="flex">
                <div class="flex items-center">
                    <img src="https://picsum.photos/50" alt="Logo" class="h-8 w-8 rounded-full">
                </div>
                <div class="hidden md:flex items-center space-x-4 ml-6">
                    <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 px-3 py-2 rounded-md text-sm font-medium">Home</a>
                    <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 px-3 py-2 rounded-md text-sm font-medium">About</a>
                    <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 px-3 py-2 rounded-md text-sm font-medium">Services</a>
                    <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 px-3 py-2 rounded-md text-sm font-medium">Contact</a>
                </div>
            </div>
            <div class="hidden md:flex items-center">
                <a href="#" class="flex items-center text-gray-900 dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 px-3 py-2 rounded-md text-sm font-medium">
                    <img src="https://randomuser.me/api/portraits/men/1.jpg" alt="User avatar" class="h-8 w-8 rounded-full mr-2">
                    Profile
                </a>
            </div>
            <div class="-mr-2 flex md:hidden">
                <button class="inline-flex items-center justify-center p-2 rounded-md text-gray-400 hover:text-white hover:bg-blue-500 dark:bg-gray-700 dark:hover:bg-gray-600 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="h-6 w-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>
    <div class="md:hidden" id="mobile-menu">
        <div class="px-2 pt-2 pb-3 space-y-1 sm:px-3">
            <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 block px-3 py-2 rounded-md text-base font-medium">Home</a>
            <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 block px-3 py-2 rounded-md text-base font-medium">About</a>
            <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 block px-3 py-2 rounded-md text-base font-medium">Services</a>
            <a href="#" class="text-white dark:text-gray-300 hover:bg-blue-500 dark:hover:bg-gray-700 block px-3 py-2 rounded-md text-base font-medium">Contact</a>
        </div>
    </div>
</nav>