body { font-family: Arial; }
h2 { color: #007bff; }
input, select, textarea { width: 100%; padding: 8px; margin: 5px 0; }
button { padding: 10px; background: #007bff; color: #fff; border: none; }
.login-container { width: 300px; margin: 100px auto; }
.error { color: red; }