#go-to-top-btn{align-items:center;background-color:#000;border:none;border-radius:40%;bottom:40px;color:#fff;cursor:pointer;display:none;display:flex;font-size:36px;height:75px;justify-content:center;position:fixed;right:40px;width:75px;z-index:99}#go-to-top-btn:hover{background-color:#ccc}