body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;max-width:1200px;margin:20px auto;padding:0 20px}.input-group{margin-bottom:20px}input[type=text]{width:80%;padding:8px;margin-right:10px;border:1px solid #ccc;border-radius:4px}button{padding:8px 16px;background-color:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer}button:disabled{background-color:#ccc;cursor:not-allowed}.example{color:#666;font-size:14px;margin-bottom:20px}iframe{width:100%;height:800px;border:1px solid #ccc;border-radius:4px}#iframe-container{display:none}.error-message{background-color:#fff3f3;color:#d32f2f;padding:12px;border-radius:4px;margin-bottom:20px;border:1px solid #ffcdd2}