body{margin:0;font:16px/1.5 system-ui,sans-serif;color:#1f2933;background:#f5f2eb}main{max-width:640px;margin:48px auto;padding:0 16px}form{display:grid;gap:12px}label{display:grid;gap:4px}input,select,button{font:inherit;padding:8px 10px}pre{padding:12px;background:#fff;white-space:pre-wrap}