.btn-goTop{position:fixed;right:10px;bottom:15px;width:80px;height:80px;border:0;background:transparent;cursor:pointer;z-index:2;transition:.3s}.btn-goTop:hover{bottom:13px}.btn-goTop:hover .goTop-bg{opacity:.7}.btn-goTop img{position:absolute}.btn-goTop .goTop-bg{width:80px;height:80px;left:0;bottom:0;transition:.3s}.btn-goTop .goTop-arrow{width:30px;height:30px;margin:auto;left:0;right:0;bottom:28px}.btn-goTop span{position:absolute;margin:auto;left:0;right:0;bottom:5px;font-size:14px;color:#949493;text-align:center}