:root{font:16px/1.55 system-ui,sans-serif;color:#183641;background:#f5f9fa}*{box-sizing:border-box}body{min-height:100svh;margin:0;padding:24px;display:grid;place-items:center}main{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}.button{display:inline-block;background:#155e75;color:#fff;text-decoration:none;padding:12px 22px;border-radius:8px}.quiet{background:#e4eef1;color:#183641}.button:focus-visible{outline:3px solid #183641;outline-offset:4px}