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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>baidu知道问题</title>
<style type="text/css">
/*网页整体样式：去掉默认padding和margin*/
html, body, ul, li, ol, dl, dd, dt, p, h1, h2, h3, h4, h5, h6, form, fieldset, legend, img { margin:0; padding:0; }
/*设置宽度值，高度自适应，版心居中*/
.root{
width: 970px;
margin: 0 auto;
background-color: rgba(222,222,222,.9);
}
/*顶部整个横条banner###########################*/
.top{
width: 970px;
overflow: hidden;
}
/*顶部banner左侧*/
.tLeft{
float: left;
width: 277px;
height: 103px;
background-color: #FE0000;
margin-right: 14px;
}
/*顶部banner右侧*/
.tRight{
float: left;
width: 679px;
}
/*顶部banner右侧 上部*/
.trTop{
float: right;
width: 137px;
height: 49px;
background: #00FF01;
}
/*顶部banner右侧 下部*/
.trBottom{
float: right;
width: 679px;
height: 46px;
margin-top: 8px;
background-color: #00FF01;
}
/*中心主内容区########################################*/
.main{
width: 970px;
margin-top: 10px;
overflow: hidden;
}
.mLeft{
float: left;
width: 310px;
height: 435px;
background-color: #FC0;
}
.mRight{
float: right;
width: 650px;
}
.mrTop{
width: 650px;
height: 400px;
margin-bottom: 10px;
}
.mrBottom{
width: 650px;
height: 25px;
background-color: #329900;
}
.mrtLeft{
float: left;
width: 450px;
}
.mrtRight{
float: right;
width: 190px;
height: 100%;
background-color: #CB3398;
}
.m1{
width: 450px;
height: 240px;
background-color: #39f;
}
.m2{
width: 450px;
height: 110px;
background-color: #39f;
margin-top: 10px;
}
.m3{
width: 450px;
height: 30px;
background-color: #39f;
margin-top: 10px;
}
/*底部banner#################################*/
.bottom{
width: 970px;
height: 35px;
background-color: #009;
margin-top: 10px;
}
</style>
</head>
<body>
<div class="root">
<div class="top">
<div class="tLeft"></div>
<div class="tRight">
<div class="trTop"></div>
<div class="trBottom"></div>
</div>
</div>
<div class="main">
<div class="mLeft"></div>
<div class="mRight">
<div class="mrTop">
<div class="mrtLeft">
<div class="m1"></div>
<div class="m2"></div>
<div class="m3"></div>
</div>
<div class="mrtRight"></div>
</div>
<div class="mrBottom"></div>
</div>
</div>
<div class="bottom"></div>
</div>
</body>
</html>
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