.back-top{display:block;float:right;width:39px;height:39px;margin-right:11px;margin-top:10px;transition:background-color .2s;font-size:0;line-height:0;text-indent:-4000px;background:url(/wp-content/themes/modular/css/images/icon_top.png) no-repeat center center;border-radius:50%;cursor:pointer}.desktop-device .back-top:hover{background-color:#0d1c29}