老师您好,请问这个同学是同个图片这个代码是什么意思,我们学了吗,没看懂
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>display属性</title>
<style type="text/css">
*{margin:0px auto;padding:0px;}
li{list-style-type:none;}
.big{width:100px;background:#eaeaea;border:1px #bebebe solid;margin:0px auto;}
h3{text-align:center;border-top:1px #bebebe solid;border-bottom:1px #bebebe solid;}
ul{text-align:center;background:white;font-size:14px;line-height:2em;display:none;}
h3:hover~ul{display:block;}
</style>
</head>
<body>
<div class="big">
<div class="div1">
<h3>家电</h3>
<ul class="elec">
<li>冰箱</li>
<li>洗衣机</li>
<li>空调</li>
</ul>
</div>
<div class="div2">
<h3>洗护</h3>
<ul class="wash">
<li>洗衣液</li>
<li>消毒液</li>
<li>柔顺剂</li>
</ul>
</div>
<div class="div3">
<h3>衣物</h3>
<ul class="clothes">
<li>衬衫</li>
<li>裤子</li>
<li>卫衣</li>
</ul>
</div>
</div>
</body>
</html>

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