为什么css里的ul没反应？其它都有反应。

我要去掉ul的点，为什么不好用啊，没反应。其它的都是有效果的。<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Leryang首页</title>
<link href="css/Leryang.css" rel="stylesheet" type="text/css"/></head>
<body>
<div class="leryang1">
<div id = "leryang1.1" class="blur-bg"  style="background-image: url(img/bilibili.png)"></div>
<div class = "content" >
<ul>
<li>注册</li>
<li>注册</li>
</ul>
</div>
</div>
</body>
</html>CSS
.leryang1{
background-image: url(../img/bilibili.png);
position:absolute;
top:0;
left:0;
width:100%;
height:100%;
background-repeat:no-repeat;
background-position: center -10px;
}
ul{
list-style-type:none;
margin:0;
padding:0;
}
.blur-bg{

position:absolute;
top:0;
left:0;
width:100%;
height:45px;
background-repeat:no-repeat;
background-position: center -10px;
filter: blur(4px);

}
.content{

position:absolute;
top:0;
left:0;
width:100%;
height:45px;
background-color:hsla(0,0%,100%,.4);
box-shadow:0 1px 2px rgba(0,0,0,.1)

}