body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Helvetica,Arial,sans-serif;margin:0;background:#0e0f13;color:#e8e8ea}
main{max-width:800px;margin:4rem auto;padding:0 1rem}
h1{font-size:2.2rem}
.btn{display:inline-block;background:#5b8def;color:#fff;text-decoration:none;padding:.6rem 1rem;border-radius:.4rem}
pre{background:#111319;padding:1rem;border-radius:.4rem;overflow:auto}