SOURCE

<ul id="main">
<li>首页</li>
<li>首页</li>
<li>首页</li>
<li>首页</li>
<li>首页</li>

</ul>

ol,ul {
 list-style: none;
 }
#main{
    margin:20px auto;
    width:800px;
    height:40px;
    background:blue;
    }
#main li{
    width:100px;
    height:20px;
    font-weight:600;
    color:#FFFFFF;
    border-right:1px solid #ffffff;
    text-align:center;
    line-height:20px;
    margin-top:10px;
    margin-right:5px;
    float:left;
    }