<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>圣杯布局</title>
<style>
* {
padding: 0;
margin: 0;
}
body {
min-width: 600px;
}
header,
footer {
text-align: center;
width: 100%;
background-color: #bbbbbb;
}
.text {
text-align: center;
line-height: 200px;
font-size: 40px;
color: #fff;
}
.bd {
overflow: hidden;
padding: 0 200px 0 200px;
}
.main {
float: left;
width: 100%;
height: 200px;
background-color: #ddd;
}
.left {
/* opacity: 0.5; */
float: left;
width: 200px;
height: 200px;
background-color: #da4242;
/* 产生布局效果的属性 */
margin-left: -100%;
position: relative;
left: -200px;
}
.right {
/* opacity: 0.5; */
float: left;
width: 200px;
height: 200px;
background-color: #4ddef1;
/* 产生布局效果的属性 */
margin-left: -200px;
position: relative;
left: 200px;
}
</style>
</head>
<body>
<header>圣杯布局</header>
<div class="bd">
<div class="main text">
main
</div>
<div class="left text">
left
</div>
<div class="right text">
right
</div>
</div>
<footer>footer</footer>
</body>
</html>
