@charset "utf-8";
#btn {width:40px; height:40px; position:fixed; right:25px; bottom:60px; display:none; background:url(https://www.agatech.com.cn/templets/qiche/images/top_bg.png) no-repeat left top;}
#btn:hover {background:url(https://www.agatech.com.cn/templets/qiche/images/top_bg.png) no-repeat 0 -39px;}/* CSS Document */