#toTop{position:fixed;right:20px;bottom:20px;z-index:90;width:44px;height:44px;border:none;border-radius:50%;background:var(--graphite);color:var(--paper);font-size:18px;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s;box-shadow:0 6px 20px rgba(43,42,40,.25)}#toTop.show{opacity:1;pointer-events:auto}#toTop:hover{background:var(--terra)}