.nav-link{text-decoration:none;position:relative}.nav-link:after{content:"";opacity:0;background-color:#fff;height:2px;transition:left .3s,right .3s;position:absolute;bottom:-4px;left:50%;right:50%}.nav-link:hover:after{opacity:1;left:0;right:0}
.hero-btn{transition:all .3s;box-shadow:0 0 15px #a855f766}.hero-btn:hover{box-shadow:0 0 25px #a855f799}