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.article ul li {
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.article ul li .miao {
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.article ul li .miao span:first-child {
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width: 36px;
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.content {
color: #000;
padding: 10px 15px;
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.content h1 {
margin-top: 0px;
text-align: center;
margin-bottom: 30px;
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.content .act_01 ul li {
list-style: disc;
padding: 6px;
margin-left: 47px;
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</head>
<body>
<div class="container">
<div class="col-md-3">
<div class="about">
<div class="user-info">
<img src="./imgs/touxiang.jpg">
<div class="info">
<span class="nickName">昵称正在加载中....</span>
<span class="code">码龄2年</span>
<span class="icon_1">暂未认证</span>
</div>
</div>
<div class="data">
<ul class="data_top">
<li>
<span>73</span>
<span>原创</span>
</li>
<li>
<span>1万+</span>
<span>周排名</span>
</li>
<li>
<span>11万+</span>
<span>总排名</span>
</li>
<li>
<span>1万+</span>
<span>访问</span>
</li>
<li>
<span class="icon_2"></span>
<span>等级</span>
</li>
</ul>
<ul class="data_bottom">
<li>
<span>992</span>
<span>积分</span>
</li>
<li>
<span>407</span>
<span>粉丝</span>
</li>
<li>
<span>134</span>
<span>获赞</span>
</li>
<li>
<span>27</span>
<span>评论</span>
</li>
<li>
<span>76</span>
<span>收藏</span>
</li>
</ul>
</div>
<div class="medal">
<img src="imgs/1024@240.png">
<img src="imgs/blinknewcomer@240.png">
<img src="imgs/blog_normal_medal@240.png">
<img src="imgs/chizhiyiheng@240.png">
<img src="imgs/fenxiangdaren@240.png">
<img src="imgs/github@240.png">
<img src="imgs/qiandao100@240.png">
</div>
</div>
<div class="article">
<h4>分类专栏</h4>
<ul>
<li>
<img src="./imgs/20201014180756738.png">
<div class="miao">
<span>Node.js + Koa2 + vue全家桶实现新浪微博</span>
<span>4篇</span>
</div>
</li>
<li>
<img src="imgs/20201014180756918.png">
<div class="miao">
<span>JavaScript数据结构</span>
<span>6篇</span>
</div>
</li>
<li>
<img src="imgs/20201014180756928.png">
<div class="miao">
<span>原生Node.js开发Web Server博客项目学习笔记</span>
<span>9篇</span>
</div>
</li>
<li>
<img src="imgs/20201014180756930.png">
<div class="miao">
<span>阿里OSS</span>
<span>1篇</span>
</div>
</li>
<li>
<img src="imgs/20201014180756930.png">
<div class="miao">
<span>笔记</span>
<span>11篇</span>
</div>
</li>
<li>
<img src="imgs/20201014180756918.png">
<div class="miao">
<span>Vue学习笔记</span>
<span>14篇</span>
</div>
</li>
</ul>
</div>
</div>
<div class="col-md-9">
<div class="content">
<h1>实现子元素在父元素中水平垂直都居中笔记</h1>
<div class="act_01">
<h4>一、实现子元素在父元素中水平垂直都居中</h4>
<ul style="">
<li>设置子元素绝对定位</li>
<li>设置子元素的left值和top值为50%</li>
<li>设置父元素相对定位</li>
<li>设置子元素margin-left：负自身宽度一半</li>
<li>设置子元素margin-top：负自身高度一半</li>
</ul>
</div>
<div class="act_02">
<img src="imgs/snipaste20210614_160324.png" class="center-block img-responsive">
</div>
</div>
</div>
</div>
</body>
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