@media all and (min-width:1280px){.center-2{float:left;width:78%}.side-2{float:right;width:20%}.item-box{width:24%;margin:0 .5% 10px}.item-box:nth-child(2n+1),.item-box:nth-child(3n+1){clear:none}.item-box:nth-child(4n+1){clear:both}}