菜鸟教程在线编辑器

AI 编程工具
 
                <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 
<script src="https://cdn.staticfile.net/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  $("ul.test > li").css("border","4px double");
});
</script>
</head>
<body>    

<ul class="test">
  <li>列表项</li>
  <li>列表项
  <ul>
    <li>内嵌列表项 (不会有边框样式)</li>
  </ul>
  </li>
  <li>列表项</li>
</ul>

</body>
</html>
              