<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>圣杯布局</title>
<style type="text/css">
html, body {
padding: 0;
margin: 0;
}
body {
min-width: 700px;
font-size: 24px;
}
#header, #footer {
width: 100%;
height: 30px;
line-height: 30px;
background-color: #909399;
text-align: center;
}
#container {
margin-left: 240px;
margin-right: 200px;
}
#container .column{
position: relative;
float: left;
height: 100px;
}
#center {
width: 100%;
background-color: #1890ff;
}
#left {
width: 240px;
background-color: #F56C6C;
margin-left: -100%;
left: -240px;
}
#right {
width: 200px;
background-color: #E6A23C;
margin-right: -200px;
}
.clearfix:after {
content: '';
display: table;
clear: both;
}
</style>
</head>
<body>
<div id="header">#header</div>
<div id="container" class="clearfix">
<div id="center" class="column">#center</div>
<div id="left" class="column">#left</div>
<div id="right" class="column">#right</div>
</div>
<div id="footer">#footer</div>
</body>
</html>

**粗体** _斜体_ [链接](http://example.com) `代码` - 列表 > 引用
。你还可以使用@
来通知其他用户。