.back-to-top{align-items:center;background-color:#00a6ce;border:none;border-radius:10px;bottom:24px;box-shadow:0 6px 16px rgba(0,0,0,.15);color:#fff;cursor:pointer;display:none;font-size:20px;height:44px;justify-content:center;left:24px;position:fixed;width:44px;z-index:9999}.back-to-top:hover{background-color:#008bb0}