20题-经典三列布局-效果图.png
使用定位实现
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>定位实现经典三列布局</title>
<style>
*{
margin: 0;
padding: 0;
}
html,body{
height: 100%;
}
.container{
position: relative;
height: 100%;
text-align: center;
}
.left{
position: absolute;
left: 0;
top:0;
width: 200px;
height: 100%;
background-color: red;
}
.content{
background-color: green;
height: 100%;
}
.right{
position: absolute;
right:0;
top:0;
width: 200px;
background-color: blue;
height: 100%;
}
</style>
</head>
<body>
<div class="container">
<!-- 左侧 -->
<div class="left">
<h1>左侧导航</h1>
</div>
<!-- 中间内容部分 -->
<div class="content">
<h1>内容部分</h1>
</div>
<!-- 右侧侧边栏 -->
<div class="right">
<h1>右侧侧边栏</h1>
</div>
</div>
</body>
</html>
使用浮动实现
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>实现经典三列布局</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
}
#container {
/* 设置页面最小宽度 */
min-width: 360px;
font-size: 30px;
text-align: center;
}
#container div{
padding: 20px;
}
#container .left {
width: 200px;
height: 400px;
float: left;
background-color: red;
}
#container .right {
width: 200px;
height: 400px;
float: right;
background-color: green;
}
#container .middle {
height: 400px;
margin: 0 150px 0 200px;
background-color: blue;
}
</style>
</head>
<body>
<div id="container">
<div class="left">左侧导航</div>
<div class="right">右侧侧边栏</div>
<div class="middle">中间内容部分</div>
</div>
</body>
</html>
