nav ul{margin-left:0}nav ul li{list-style:none;text-decoration:none}nav ul li a{font-size:18px;line-height:100px;display:inline-block;position:relative;text-transform:uppercase}.active:before{content:"";position:absolute;top:-15px;left:50%;transform:translate(-50%) rotate(45deg);width:30px;height:30px;background-color:#0cc0df}@keyframes slide-in{0%{transform:translate(100%)}to{transform:translate(0)}}@keyframes slide-out{0%{transform:translate(0)}to{transform:translate(100%)}}.animate-slide-in{animation:slide-in .3s forwards}.animate-slide-out{animation:slide-out .3s forwards}