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<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.cn/w3css/4/w3.css">
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<h2>混合：手机、平板电脑和笔记本电脑</h2>
<p>此示例将生成一个三列布局，在大屏幕上按 25%/58.34%/16.66%（l3、l7、l2）拆分，在中屏幕上按 50%/25%/25%（m6、m3、m3）拆分， 33.3%/33.3%/33.3% (s4, s4, s4) 在小屏幕上的分布：</p>
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<div class="w3-row">
<div class="w3-col l3 m6 s4 w3-green w3-center"><p>l3 m6 s4</p></div>
<div class="w3-col l7 m3 s4 w3-dark-grey w3-center"><p>l7 m3 s4</p></div>
<div class="w3-col l2 m3 s4 w3-red w3-center"><p>l2 m3 s4</p></div>
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<div class="w3-row w3-container">
<p>在一个容器里面：</p>
<div class="w3-row">
<div class="w3-col l3 m6 s4 w3-green w3-center"><p>l3 m6 s4</p></div>
<div class="w3-col l7 m3 s4 w3-dark-grey w3-center"><p>l7 m3 s4</p></div>
<div class="w3-col l2 m3 s4 w3-red w3-center"><p>l2 m3 s4</p></div>
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