body{color:#222;background:#fff;margin:0;padding:32px 20px;font-family:Arial,Helvetica,sans-serif;line-height:1.6}main{max-width:720px;margin:0 auto}h1{font-size:32px}h2{font-size:21px}hr{border:0;border-top:1px solid #ddd;margin:28px 0}ul{padding-left:24px}li{margin-bottom:10px}footer{color:#666;margin-top:48px;font-size:13px}