body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;max-width:720px;margin:0 auto;padding:24px 16px 48px;line-height:1.6;color:#222;background:#fff}
h1{font-size:1.8em;margin-bottom:.2em}h2{font-size:1.2em;margin-top:1.8em}
a{color:#2a6df4}footer{margin-top:3em;font-size:.9em;color:#666;border-top:1px solid #ddd;padding-top:1em}