try_w3examples_3 在线代码实例

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<!DOCTYPE html>
<html>
<head>
    <title>W3.CSS(w3cschool.cn)</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
</head>
<body>
<div class="w3-container">
    <h1>悬停颜色</h1>
    <p>将鼠标悬停在元素上时更改背景颜色：</p>
    <div class="w3-container w3-orange w3-hover-red">
        <h2>伦敦</h2>
        <p>伦敦是英国人口最多的城市，拥有超过900万居民。</p>   
    </div>
</div>
</body>
</html>
 
 
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运行结果
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