#navigator{background: rgb(17, 55, 58, 0.5);background: rgba(17, 55, 58, 0.5);}
#navigator a{position: relative;}
#navigator a:hover{text-decoration: none;}
#navigator a:before{content:"";position: absolute;left: 0px;bottom: 0px;width: 0px;height: 2px;background: #fff;transition: all 0.3s ease-out;}
#navigator a:hover:before{width: 100%;}
#navigator a:active{-webkit-transform: translate(1px,1px);transform: translate(1px,1px);}