css选择器 :first-of-type 测试demo，HTML代码在线实时编辑、实时预览

            
                1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

            
            <!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    div:first-of-type {
      color: red;
    }
  </style>
</head>

<body>
  <div>第一个 div</div>
  <p>一个段落</p>
  <div>第二个 div</div>
  <section>
    <div>嵌套的第一个 div</div>
    <div>嵌套的第二个 div</div>
  </section>
</body>

</html>