.scroll-down{opacity:1;transition:all .5s ease-in 3s;left:50%;margin-left:-16px;display:block;width:32px;height:32px;background-size:14px auto;border-radius:50%;animation:bounce 2s 1s infinite;transition:opacity .3s ease;position:fixed;bottom:1rem;right:0}.scroll-down.hidden{opacity:0}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%{transform:translateY(-10px)}60%{transform:translateY(-5px)}}