.back-to-top{align-items:center;background-color:#fff;border-radius:100px;bottom:48px;-webkit-box-shadow:0 4px 8px 0 rgba(0,0,0,.4);-moz-box-shadow:0 4px 8px 0 rgba(0,0,0,.4);box-shadow:0 4px 8px 0 rgba(0,0,0,.4);cursor:pointer;display:flex;height:70px;justify-content:center;position:fixed;right:48px;text-align:center;transition:all .25s ease;width:70px}.back-to-top:hover{opacity:.6}