body{max-width:38rem;margin:6rem auto;padding:0 1.5rem;font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#222;background:#fff}
nav{font-size:.88rem;margin-bottom:3rem;padding-bottom:1rem;border-bottom:1px solid #f0f0f0}
nav a{color:#888;text-decoration:none;margin-right:1.2rem}
h1{font-size:1.4rem;font-weight:600;margin:0 0 1.5rem}
h2{font-size:.95rem;font-weight:600;margin:2rem 0 .4rem}
p,li{color:#444}ul{padding-left:1.2rem}a{color:#222}
footer{color:#999;font-size:.82rem;margin-top:3rem}