body { padding-top: 20px; } .hidden { display: none; } .login-container { max-width: 400px; margin: 0 auto; padding: 2rem; background-color: #fff; border-radius: 8px; box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); } .card { margin-bottom: 20px; }