App下载
实例代码( Tip: 登录后体验更佳 )
<!DOCTYPE html>
<html>
<head>
<title>W3.CSS(w3cschool.cn)</title>
<meta name="viewport" content="width=device-width, initial-scale=1" charset="UTF-8">
<link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
</head>
<body>
<div class="w3-container">
<h2></h2>
<p></p>
<p class="w3-tooltip">
<span class="w3-text">(<em>900</em>)</span>
</p>
<p class="w3-tooltip">
<span class="w3-text w3-tag"><b>900</b></span>
</p>
</div>
</body>
</html>
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运行结果