x
1
2
<html>3
<head>4
<meta charset="utf-8">5
<title>蜜蜂教程(mifengjc.com)</title>6
<style>7
[lang|=en] {8
color: blue;9
}10
</style>11
</head>12
13
<body>14
<h2>将适用:</h2>15
<p lang="en">Hello!</p>16
<p lang="en-us">Hi!</p>17
<p lang="en-gb">Ello!</p>18
<hr>19
<h2>将不适用:</h2>20
<p lang="us">Hi!</p>21
<p lang="no">Hei!</p>22
</body>23
</html>