grids.css

.line:before,.line:after{content:"";display:table;}
.line:after{clear:both;}
.line{*zoom:1;}
.unit{float:left;}
.unit-right{float:right;}
.size1of1{float:none;}
.size1of2{width:50%;}
.size1of3{width:33.33333%;}
.size2of3{width:66.66666%;}
.size1of4{width:25%;}
.size3of4{width:75%;}
.size1of5{width:20%;}
.size2of5{width:40%;}
.size3of5{width:60%;}
.size4of5{width:80%;}
.lastUnit{float:none;display:block;display:table-cell;width:9999em;*width:auto;*zoom:1;_position:relative;_left:-3px;_margin-right:-3px;}