.nav-link{position:relative;padding-bottom:4px;transition:color .3s}.nav-link:after{content:"";position:absolute;bottom:0;left:0;height:2px;width:0%;background:linear-gradient(to right,#f9a63a,#ff7c66,#c86dd7);transition:width .3s}.nav-link:hover:after,.nav-link.active:after{width:100%}