body{font:16px/1.7 -apple-system,Segoe UI,Helvetica,Arial,sans-serif;max-width:680px;margin:0 auto;padding:32px 18px;color:#23313a;background:#fff}header{border-bottom:2px solid #3b6e8f;padding-bottom:12px}h1{color:#3b6e8f;font-size:26px;margin:0}nav a{margin-right:12px;color:#3b6e8f}article{padding:22px 0;border-bottom:1px solid #e6ecef}time{color:#8a9aa3;font-size:13px}footer{margin-top:40px;color:#9aa;font-size:13px}