<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>盒模型</title>
<style type="text/css">
div{width:200px;height:200px;border:10px solid #39c;margin:20px;padding:20px; font-family: Verdana, Arial, Helvetica, sans-serif
}
</style>
</head>
<body>
<div>content div</div>
</body>
</html>
就是上面的代码。我套用不了源格式。
套用了源格式的是应该是下面这样的
<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>盒模型</title>
<style type="text/css">
div{
width:200px;
height:200px;
border:10px solid #39c;
margin:20px;padding:20px;
}
</style>
</head>
<body>
<div>content div</div>
</body>
</html>