body { font-family: sans-serif; background: #f4f4f4; text-align: center; padding-top: 50px; }
.login-container { background: white; padding: 20px; max-width: 400px; margin: auto; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
input { padding: 10px; width: 80%; margin: 10px 0; font-size: 18px; text-align: center; }
button { padding: 10px 20px; background: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer; }