css匹配选择第n个子元素可以使用:nth-child(n) 选择器,其匹配属于其父元素的第n个子元素,不论元素的类型
<div class="content-wrap"> <h1>hahaah</h1> <h1>hahaah</h1> <p>xixi1</p> <p>xixi2</p> <p>xixi3</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/cb6835dc7db1" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">前端免费学习笔记(深入)</a>”;</p>
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<p>xixi4</p> </div>变红色的是 xixi1
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