body {margin: 0;background-color: #222}



main section {}

.box {margin: 0 auto}

.left {float: left;}

.center {margin: 0 auto;}

.right {float: right;}

.clear {clear: both;}

.clearfix:after {content: "";clear: both;height: 0;width: 0;display: block;}

.text-center {text-align: center;}