Paste_Image.png
<body>
<div class="layout">
<div id="aside-1">aside-1</div>
<div id="aside-2">aside-2</div>
<div id="main">main</div>
</div>
</body>
.layout{
width: 800px;
margin: 0 auto;
}
#aside-1{
width: 100px;
height: 300px;
background: yellow;
float: left;
}
#aside-2{
width: 150px;
height: 250px;
background: red;
float: right;
}
#main{
height: 400px;
background: #aaa;
margin-left: 100px;
margin-right: 150px;
}
