* {margin: 0; padding: 0;}
body {text-align: center; padding: 20px;}
h2 {padding: 40px 0 40px;}
section {margin: 0 auto; display: block; width:1020px; text-align: center;}
section ul {margin-left:80px;}
section ul li {display: block; float: left; padding-top: 20px; width: 30%;}
section ul li img{width: 95%;}
section ul li img:nth-child(1) {padding-left: 10px;}