<style>
*{
margin:0;
padding:0;
}
div{
border:1px solid #ccc;
margin-bottom:10px;}
#big{
width:960px;
margin:0px auto;
}
# menu{
height:110px;
}
#swf{
height:310px;
}
#ad{
height:45px;
}
#arc{
height:700px;
}
#arc .l{
width:680px;
height:700px;
float:left;
}
#arc .r{
width:220px;
height:700px;
float:right;
}
</style>
<body>
<div id="big">
<div id="menu">
菜单栏
</div>
<div id="swf">falsh广告</div>
<div id="ad">ad广告</div>
<div id="arc">
<div class="l">左侧</div>
<div class="r">右侧</div>
</div>
</div>
</body>
效果如图所示：