.float-left{float:left;}
.float-right{float:right;}
.clear{clear:both;}
.clear-left{clear:left;}
.clear-right{clear:right;}
.center{margin:0 auto;}
.margins{margin:30px;}
.push-top{margin-top:30px;}
.push-right{margin-right:30px;}
.push-bottom{margin-bottom:30px;}
.push-left{margin-left:30px;}
.dim{opacity:0.6;}
.cf:before,.cf:after{content:"";display:table;}
.cf:after{clear:both;}
.cf{zoom:1;}