body { font-family: Arial, sans-serif; margin: 20px; background: #f8fdf8; }
h1, h2 { color: #2d6a4f; }
.login-form { max-width: 300px; margin: 50px auto; padding: 20px; border:1px solid #ccc; border-radius:8px; background:#fff; }
.login-form input, .login-form button { width:100%; margin-top:10px; padding:8px; }
.error { color: red; }