.back-to-top-btn{display:none;position:fixed;z-index:20;bottom:20px;right:20px;width:50px;height:50px;background:#005eb8;border-radius:3px;color:#fff;cursor:pointer}.back-to-top-btn span{float:left;content:'';background:url('https://cdn2.hubspot.net/hubfs/6028857/Blog-Assets-April-2020/Images/up-arrow.svg') no-repeat;background-size:contain;width:15px;height:15px;position:absolute;top:50%;left:50%;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%)}.back-to-top-btn.active{display:block}.back-to-top-btn.active:hover{box-shadow:0px 10px 20px 0px rgba(0,94,184,0.5);-webkit-box-shadow:0px 10px 20px 0px rgba(0,94,184,0.5);-moz-box-shadow:0px 10px 20px 0px rgba(0,94,184,0.5)}