本文共 1191 字，大约阅读时间需要 3 分钟。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.wrap div [class=box1]{
color: brown;
}
.wrap p [class=box1]{
color: blue;
}
.wrap input[type=text]{
color: aqua;
}
ol li:nth-child(2n+1){
background-color: blue;
}
ol p:nth-child(2){
background-color: brown;
}
ol div:nth-child(6){
background-color: darkblue;
}
</style>
</head>
<body>
<div class="wrap">
<div class="box1"></div>
<p class="box1"></p>
<div class="box2">222</div>
<div class="box3">333</div>
<div class="box4">444</div>
<input type="text" value="文本">
<div class="box1"></div>
<p class="box1"></p>
<div class="box2">222</div>
<div class="box3">333</div>
<div class="box4">444</div>
<input type="text" value="文本">
<div class="box1"></div>
<p class="box1"></p>
<div class="box2">222</div>
<div class="box3">333</div>
<div class="box4">444</div>
<input type="text" value="文本">
<div class="box1"></div>
<p class="box1"></p>
<div class="box2">222</div>
<div class="box3">333</div>
<div class="box4">444</div>
<input type="text" value="文本">
</div>
</body>
</html>
转载地址：http://qweuuy.baihongyu.com/