HTML 代码
<div class="min-h-screen bg-gray-900 dark:bg-gray-900 flex flex-col items-center justify-center p-4"><div class="w-full max-w-md bg-gray-800 dark:bg-gray-800 rounded-lg shadow-xl p-8 space-y-6 border border-teal-500"><h2 class="text-3xl font-extrabold text-white text-center">Sign In / Sign Up</h2><p class="text-gray-400 text-center">Join our community and explore amazing features</p><div class="space-y-4"><button class="w-full flex items-center justify-center px-5 py-3 border border-transparent text-base font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 transition duration-300 ease-in-out dark:bg-blue-700 dark:hover:bg-blue-800"><img src="https://www.google.com/images/branding/googleg/1x/googleg_standard_color_64dp.png" alt="Google Icon" class="w-5 h-5 mr-3"/>Sign in with Google</button><button class="w-full flex items-center justify-center px-5 py-3 border border-transparent text-base font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500 transition duration-300 ease-in-out dark:bg-indigo-700 dark:hover:bg-indigo-800"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Facebook_icon.svg/1200px-Facebook_icon.svg.png" alt="Facebook Icon" class="w-5 h-5 mr-3"/>Sign in with Facebook</button><button class="w-full flex items-center justify-center px-5 py-3 border border-transparent text-base font-medium rounded-md text-white bg-pink-600 hover:bg-pink-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-pink-500 transition duration-300 ease-in-out dark:bg-pink-700 dark:hover:bg-pink-800"><img src="https://github.githubassets.com/images/modules/logos_page/GitHub-Mark.png" alt="GitHub Icon" class="w-5 h-5 mr-3 border-white rounded-full"/>Sign in with GitHub</button></div><div class="relative flex items-center"><div class="flex-grow border-t border-gray-700"></div><span class="flex-shrink mx-4 text-gray-500">Or continue with</span><div class="flex-grow border-t border-gray-700"></div></div><form class="space-y-4"><input type="email" placeholder="Email Address" class="w-full px-4 py-3 rounded-md bg-gray-700 text-white placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-teal-500 border border-transparent focus:border-teal-500 transition duration-300 ease-in-out"/><input type="password" placeholder="Password" class="w-full px-4 py-3 rounded-md bg-gray-700 text-white placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-teal-500 border border-transparent focus:border-teal-500 transition duration-300 ease-in-out"/><button type="submit" class="w-full px-5 py-3 border border-transparent text-base font-medium rounded-md text-white bg-teal-600 hover:bg-teal-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-teal-500 transition duration-300 ease-in-out dark:bg-teal-700 dark:hover:bg-teal-800">Log In</button></form><p class="text-center text-gray-400">Don't have an account? <a href="#" class="text-teal-500 hover:text-teal-400 font-medium">Sign Up</a></p><div class="flex justify-around mt-6"><a href="#" class="text-gray-400 hover:text-white transition duration-300 ease-in-out text-sm">Privacy Policy</a><a href="#" class="text-gray-400 hover:text-white transition duration-300 ease-in-out text-sm">Terms of Service</a><a href="#" class="text-gray-400 hover:text-white transition duration-300 ease-in-out text-sm">Help</a></div></div></div>