body{font-family:system-ui,sans-serif;background:#0f172a;color:#e2e8f0;display:grid;place-items:center;min-height:100vh;margin:0}
main{max-width:42rem;padding:2rem;text-align:center}
h1{font-size:2rem}
code{background:#1e293b;padding:.15rem .4rem;border-radius:.3rem}