App下载
实例代码( Tip: 登录后体验更佳 )
<!DOCTYPE html>
<html>
<title>(w3cschool.cn)</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
<body>
<div class="w3-container">
<h2></h2>
<p>:</p>
<button class="w3-button w3-black w3-hover-green"></button>
<div class="w3-container w3-border w3-hover-green">
<p></p>
</div>
</div>
</body>
</html>
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运行结果