try_w3reference_217 在线代码实例

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运行代码

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<!DOCTYPE html>
<html>
<title>编程狮(w3cschool.cn)</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
<body class="w3-xxlarge">
<div class="w3-container w3-black w3-text-brown">
  <p>黑底棕色字.</p>
</div>
<div class="w3-container w3-gray w3-text-brown">
  <p>灰底棕色字.</p>
</div>
<div class="w3-container w3-text-brown">
  <p>白底棕色字.</p>
</div>
</body>
</html>
 
 
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运行结果
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