.hmbrgr{position:relative;display:inline-block}.hmbrgr span{position:absolute;left:0;width:100%;background:#fff;display:inline-block}.hmbrgr.expand span:nth-child(1){-webkit-transform:rotate(-45deg);-moz-transform:rotate(-45deg);-o-transform:rotate(-45deg);-ms-transform:rotate(-45deg);transform:rotate(-45deg)}.hmbrgr.expand span:nth-child(2){zoom:1;filter:alpha(opacity=0);-webkit-opacity:0;-moz-opacity:0;opacity:0}.hmbrgr.expand span:nth-child(3){-webkit-transform:rotate(45deg);-moz-transform:rotate(45deg);-o-transform:rotate(45deg);-ms-transform:rotate(45deg);transform:rotate(45deg)}