body{font:17px/1.6 system-ui,sans-serif;max-width:46rem;margin:0 auto;padding:1.5rem;color:#1c1c1c}
a{color:#0b5cad}nav{margin-bottom:2rem}nav a{margin-right:1rem}h1{line-height:1.2}
.card{border:1px solid #ddd;border-radius:8px;padding:.8rem 1rem;margin:.8rem 0}.card h3{margin:.1rem 0}
.btn{display:inline-block;background:#0b5cad;color:#fff;padding:.5rem 1rem;border-radius:6px;text-decoration:none}
footer{margin-top:3rem;border-top:1px solid #ddd;padding-top:1rem;font-size:.9rem;color:#555}code{background:#f3f3f3;padding:0 .2rem}