页面代码：
<div id="all">
<!--网站头部-->
<div id="top">
<div id="top_one">
<img src="../images/top_1.png">
</div>
<!--Logo展示-->
<div id="top_two">
<img src="../images/top_2.png">
</div>
<!--新闻链接-->
<div id="top_three">
<img src="../images/top_3.png">
</div>
<!--导航栏-->
<div id="top_four">
<img src="../images/top_4.png">
</div>
</div>
<!--网站中间部分-->
<div id="middle">
<div id="m_l">
aaaa
</div>
<div style="clear:both"></div>
<div id="m_r">
aaaa
</div>
</div>
样式代码：
#all{width:1005px;height:auto;}
#top{width:1005px;height:auto;}
#middle{width:1005px;height:400px;border:3px #0033ff solid;}
#bottom{width:1005px;height:100px;border:3px #0033ff solid;margin-top:20px;}
#top_one{width:1001px;height:30px; }
#top_two{width:1001px;height:95px;}
#top_three{width:1001px;height:30px;}
#top_four{width:1001px;height:35px;}
#m_l{width:500px; height:450px;border:3px #0033ff solid;}
#m_r{width:90px; height:450px;border:3px #0033ff solid;float:right;}
