例如：<p>1</p>
<p>2</p>
<p>3</p>
<p>4</p>
<p>5</p>
<p>6</p>
<p>7</p>
<p>8</p>
<p>9</p>
<p>10</p>
<p>11</p>
<p>12</p>怎么选择1，2跳过3，4选择5，6以此类推
1 回答
MAIN_tzboy
TA贡献4条经验 获得超2个赞
<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.demo{
display: inline-block;width: 50px;height: 50px;
background-color: #e3e3e3;
}
.demo:nth-child(4n+1),.demo:nth-child(4n+2){
background-color: red;
}
</style>
</head>
<body>
<div class="demo-list">
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
<div class="demo"></div>
</div>
</body>
</html>?
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