a.back-to-top{border-radius:50%;bottom:35px;cursor:pointer;display:none;height:48px;padding-top:8px;position:fixed;right:35px;text-align:center;width:auto;z-index:9999}.bounce{animation:bounce 2s infinite}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%,60%{transform:translateY(-2px)}}@media (max-width:767px){a.back-to-top{bottom:16px;display:none;right:16px}}