try_w3examples_4 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" charset="UTF-8">
    <link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
</head>
<div>
    <h2>没有容器</h2>
    <p>w3-container 类是最重要的 W3.CSS 类之一。</p>
    <p>它为大多数HTML元素提供正确的页边距，内边距，对齐方式等。</p>
</div>
<div class="w3-container">
    <h2>带容器</h2>
    <p>w3-container 类是最重要的 W3.CSS 类之一。</p>
    <p>它为大多数HTML元素提供正确的页边距，内边距，对齐方式等。</p>
</div>
</body>
</html>
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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运行结果
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