#pageTopBtn{background:#066dff;border:none;border-radius:50%;bottom:40px;cursor:pointer;height:56px;opacity:0;position:fixed;right:40px;transform:translateY(20px);transition:all .3s ease;visibility:hidden;width:56px;z-index:9999}#pageTopBtn.show{opacity:1;transform:translateY(0);visibility:visible}@media (max-width:767px){#pageTopBtn{height:48px;right:1rem;width:48px}}