body{font:16px system-ui;background:#f3f5f7;color:#17212b;margin:0}main{max-width:720px;margin:24px auto;padding:24px}button{font:inherit;padding:14px;border:0;border-radius:8px;background:#0077ff;color:white}button:disabled{opacity:.5}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:white;padding:16px;border-radius:8px}