初学JAVA,这个代码为什么就不可以显示横排的哇
<html>
<head>
<style type="text/css">
div{background-image:url(E:\压缩文件\新建文件夹\Chapter05\提供给学员的资料\练习素材\练习2:盒内样式-修饰贵美商品分类\images\bg.gif);
background-repeat: no-repeat;
background-position:5px 0px;
width:800;
font:600;
}
li{
list-style:none;
width:500px;
font:18px 楷体;
float:left;
}
.q{color:red;}
.lihu{color:red;}
.jia1{
width:5px;
list-style:none;
font:13px;
float:left;
}
.ziti{
font:28px 隶书;
letter-spacing="5px"
text-decoration="underline"
}
</style>
</head>
<body>
<ul>
<li class="ziti">你好,欢迎访问贵美商城!<li>
</ul>
<div>
<ul>
<li> </li>
<li> </li>
<li class="q"> 家用电器</li>
</ul>
<ul class="jia1">
<li> </li>
<li>大家电</li>
<li>洗衣机</li>
<li>电冰箱</li>
</ul>
<ul >
<li class="lihu">日用百货</li>
<li>肥皂</li>
<li>洗衣粉</li>
<li>纸巾</li>
</ul>
</div>
</body>
</html>