*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;line-height:1.6;color:#1f2933;background:#fff}
header{background:#1f3a4d;color:#fff;padding:2.5rem 1.25rem}
h1{margin:0 auto;max-width:42rem;font-size:1.9rem}
main,footer p{max-width:42rem;margin:0 auto;padding:0 1.25rem}
section{margin:2rem 0}
h2{font-size:1.2rem;border-bottom:1px solid #d9e2ec;padding-bottom:.3rem}
a{color:#1f5f8b}
footer{border-top:1px solid #d9e2ec;padding:1.25rem 0;color:#52606d;font-size:.9rem}