.to-top-btn{bottom:40px;display:none;font-size:0;height:64px;pointer-events:none;position:fixed;right:40px;width:64px;z-index:100}.to-top-btn.is-visible{display:block;pointer-events:auto}.to-top-btn img{display:block;height:100%;width:100%}@media (max-width:1599px){bottom:16px;height:44px;right:16px;width:44px}@media (max-width:1023px){display:none}