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> 
<style>
div:has(.active) {
  background-color: yellow;
}
</style>
</head>
<body>

<div>
  <span class="active">Active item</span>
</div>
<div>
  <span>Non-active item</span>
</div>

</body>
</html>
              