.back-to-top{background:#007fd8;border-radius:4px;border-radius:50%;bottom:5px;cursor:pointer;font-size:20px;height:45px;line-height:40px;padding:1px 8px 4px;position:fixed;right:11px;text-align:center;width:auto;width:45px}.back-to-top a,.back-to-top a:hover{color:#fff}