back-to-top{position:fixed;left:50%;bottom:2.8125rem;z-index:10;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:.5rem;font-size:.75rem;line-height:1;opacity:0;pointer-events:none;transition:opacity .3s ease-out;cursor:pointer;padding:1rem}back-to-top.active{opacity:1;pointer-events:initial}