.gnb li{display:inline-block}.gnb li a{color:#fff;padding:5px;position:relative}.gnb li a:after{content:"";background:#fff;width:0%;height:1px;transition:all .5s;position:absolute;bottom:0;left:0;transform:none}.gnb li a:hover:after,.gnb li a:focus:after,.gnb li a.active:after{width:100%}