html/global-attr/html-global-lang-1.xhtml

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>xhtml:lang</title>
<style type="text/css">
:lang(ja) {
  color: green;
}
</style>
</head>
<body xmlns:xhtml="http://www.w3.org/1999/xhtml">
<h1><code><var>xhtml</var>:id</code></h1>

<p xhtml:lang="ja">
An element whose <code><var>xhtml</var>:lang</code> is <code>ja</code>
(but the <code>xml:lang</code> is <code>zh</code> and
the <code>lang</code> is <code>de</code>).
</p>

</body>
</html>
1	<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
2	<head>
3	<title>xhtml:lang</title>
4	<style type="text/css">
5	:lang(ja) {
6	color: green;
7	}
8	</style>
9	</head>
10	<body xmlns:xhtml="http://www.w3.org/1999/xhtml">
11	<h1><code><var>xhtml</var>:id</code></h1>
12
13	<p xhtml:lang="ja">
14	An element whose <code><var>xhtml</var>:lang</code> is <code>ja</code>
15	(but the <code>xml:lang</code> is <code>zh</code> and
16	the <code>lang</code> is <code>de</code>).
17	</p>
18
19	</body>
20	</html>