在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title>
<style>[title=cainiaoplay]
{
	border:5px solid green;
}
</style>
</head>

<body>
<h2>将适用:</h2>
<img title="cainiaoplay" src="logo.png.html" width="270" height="50" />
<br>
<a title="cainiaoplay" href="../index.html">cainiaoplay</a>
<hr>
<h2>将不适用:</h2>
<p title="greeting">Hi!</p>
<a class="cainiaoplay" href="../index.html">cainiaoplay</a>
</body>
</html>

源代码

动行结果