body{background-color:#fff}body{font-family:sans-serif;line-height:1.6;margin:0;padding:0;background-color:#f4f4f4;color:#333}nav{background:#333;color:#fff;padding:1em 0;text-align:center}nav ul{padding:0;list-style:none}nav ul li{display:inline;margin:0 10px}nav ul li a{color:#fff;text-decoration:none}nav ul li a:hover{text-decoration:underline}main{padding:20px;max-width:800px;margin:20px auto;background:#fff;box-shadow:0 0 10px #0000001a}h1,h2{color:#333}