body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;max-width:680px;margin:0 auto;padding:48px 20px;color:#1d1d1f;line-height:1.6}
h1{font-size:2rem;margin-bottom:.25rem}
a{color:#0066cc}
nav a{margin-right:16px}
footer{margin-top:64px;padding-top:16px;border-top:1px solid #ddd;font-size:.9rem;color:#555}