老师代码实现效果了,看下注释内容是否正确以及最后面的问题
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>display属性</title>
<style type="text/css">
/*样式补充*/
*{margin:0px;padding:0px;}
.big{background-color:#d9dde1; width:100px;border:1px #ececec solid;
text-align:center;margin:0px 4em;}
h3{text-align:center;border-top:1px #bebebe solid;}
/*简写的时候用,隔开别用;*/
.elec li,.wash li,.clothes li{background-color:white;font-size:14px;line-height:2em; display:none;}
.div1:hover li,.div2:hover li,.div3:hover li{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>
鼠标悬停的时候,怎么我只能选择li实现,把li改成ul就实现不了

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