代码效果演示图:

代码实现:
<!DOCTYPE html>
<html lang="en">
<style>
*{
padding: 0;
margin: 0;
}
.div_center{
margin: 0 auto;
}
.top{
width: 700px;
height: 100px;
background-color: red;
}
.center{
width: 700px;
height: 500px;
background-color: cyan;
}
.center .left{
width: 550px;
height: 500px;
float: left;
background-color: black;
}
.center .left .nav{
width: 150px;
height: 500px;
float: left;
background-color: skyblue;
}
.center .left .article{
width: 400px;
height: 500px;
float: right;
background-color: darkorange;
}
.center .right{
width: 150px;
height: 500px;
float: right;
background-color: pink;
}
.bottom{
width: 700px;
height: 100px;
background-color: blueviolet;
}
</style>
<head>
<meta charset="UTF-8">
<title>两栏布局—宗波尘客www.zbck123.com</title>
</head>
<body>
<div class="top div_center"></div>
<div class="center div_center">
<div class="left">
<div class="nav"></div>
<div class="article"></div>
</div>
<div class="right"></div>
</div>
<div class="bottom div_center"></div>
</body>
</html>用到的代码标签见 div布局练习
大家直接直接复制使用