使用div对网页进行排版
因为div可以理解为是HTML里面的容器，而且div也可以进行嵌套
<!DOCTYPE html>
<html>
<head>
<title>Buju_div</title>
<style>
body{
margin: 0px;
}
#container{
width: 100%;
height:1000px;
background-color: darkgray;
}
#head{
width: 100%;
height: 10%;
background-color: aqua;
}
#Left_menu{
width: 30%;
height: 80%;
background-color: blue;
float:left;
}
#right_body{
width:70%;
height: 80%;
background-color: red;
float: left;
}
#footing{
width: 100%;
height: 10%;
background-color: purple;
float: left;
}
</style>
</head>
<body>
<div id='container'>
<div id='head'>
Head_Div
</div>
<div id='Left_menu'>ZuoBianCaidan</div>
<div id='right_body'>Right_menu</div>
<div id='footing'>Footer</div>
</div>
</body>
</html>
