摘要：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>jq三级下拉</title><link rel="stylesheet" type="text/css" href="static/css/
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jq三级下拉</title>
<link rel="stylesheet" type="text/css" href="static/css/style.css">
<script type="text/javascript" src="static/js/jquery-3.3.1.min.js"></script>
<style type="text/css">
</style>
</head>
<body>
<!--头部-->
<div>
<div></div>
</div>
<!--内容-->
<div>
<div>
<div></div>
<div></div>
<div></div>
<div></div>
<div style="background:url(static/images/longAD1.jpg);"></div>
<div></div>
<div></div>
<div style="background:url(static/images/longAD2.jpg);"></div>
<div></div>
<div></div>
<div style="background:url(static/images/longAD3.jpg);"></div>
<div></div>
</div>
</div>
<!--底部-->
<div>
<div></div>
</div>
</body>
</html>
