.lnbArrow{width:10px;height:10px;display:inline-block;position:relative;transform:rotate(45deg);top:4px;right:8px}.lnbArrow:after,.lnbArrow:before{position:absolute;content:"";width:9px;height:1px;background-color:#999;transition:.5s ease}.lnbArrow:after{transform:rotate(90deg);top:-4px;left:4px}input[type=checkbox]:checked~.lnbArrow:before{transform:rotate(-90deg);transition:.5s ease}input[type=checkbox]:checked~.lnbArrow:after{transform:rotate(180deg);transition:.5s ease}