用四个DIV做四个块成一个田
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>用DIV做成一个田</title>
<style>
#zz{
width: 400px;
height: 400px;
}
#s1{
width: 200px;
height: 200px;
background: black;
float: left;
}
#s2{
width: 200px;
height: 200px;
background: green;
float: left;
}
#s3{
width: 200px;
height: 200px;
background: navy;
float: left;
}
#s4{
width: 200px;
height: 200px;
background: yellow;
float: left;
}
</style>
</head>
<body>
<div id="zz">
<div id="s1"></div>
<div id="s2"></div>
<div id=