为什么ul标签没有默认的小圆点
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS隐藏列表</title>
<style type="text/css">
*{
margin: 0px;
padding: 0px;
}
.background{
background:url(IMG/mooc.png) no-repeat center top;
width: 100%;
height: 6632px;
}
.list-3 li{
background-color: orange;
font-weight: bold;
}
li{
text-align: center;
width: 150px;
height: auto;
border-bottom: 1px dashed #808080;
background-color: #33ccff;
font-weight: bold;
font-family: "黑体";
padding: 3px 0px;
margin:5px 0px;
}
.title{
background-color: #474747;
font-family: "微软雅黑";
font-weight: bold;
width: 150px;
height: auto;
text-align: center;
border-bottom:solid 1px #ececec;
color: white;
font-weight: bolder;
margin:5px 0px;
}
.list li{display: none;}
.list:hover li{display: block;}
.list-3{display: none;}
.title-2:hover .list-3{display: block;}
.bigdiv{
position: fixed;
top: 50%;
}
.title-2{
position: relative;
background-color: white;
}
.list-3{
position: absolute;
left: 150px;
top: -5px;
}
</style>
</head>
<body>
<div class="background">
<div class="bigdiv">
<div class="list">
<div class="title">慕课网标题</div>
<ul>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
</ul>
</div>
<div class="list">
<div class="title">慕课网标题</div>
<ul>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
</ul>
</div>
<div class="list">
<div class="title">慕课网标题</div>
<ul>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
<li class="title-2">慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
<li class="title-2">
慕课网IT学习
<div class="list-3">
<ul>
<li>java</li>
<li>html</li>
<li>web</li>
</ul>
</div>
</li>
</ul>
</div>
</div>
</div>
</html>
七月的孩子1回答
随时随地看视频慕课网APP
Html5
Html/CSS
CSS3