header,nav,section,article,aside,footer{display:block}*,*:before,*:after{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}.clearfix:before,.clearfix:after{display:table;content:" "}.clearfix:after{clear:both}.hide{display:none}.show{display:block}.text-left{text-align:left}.text-center{text-align:center}.text-right{text-align:right}