编程狮在线代码实例

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<!DOCTYPE html>
<html>
<meta charset="utf-8">
<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">
    <link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3-colors-signal.css">
<body>
​
    <div class="w3-container">
      <h1>应用 w3-colors-signal</h1>
    </div>
    
    <table class="w3-table w3-large">
      <tr><td class="w3-signal-yellow">w3-signal-yellow</td></tr>
      <tr><td class="w3-signal-orange">w3-signal-orange</td></tr>
      <tr><td class="w3-signal-red">w3-signal-red</td></tr>
      <tr><td class="w3-signal-violet">w3-signal-violet</td></tr>
      <tr><td class="w3-signal-blue">w3-signal-blue</td></tr>
      <tr><td class="w3-signal-green">w3-signal-green</td></tr>
      <tr><td class="w3-signal-grey">w3-signal-grey</td></tr>
      <tr><td class="w3-signal-brown">w3-signal-brown</td></tr>
      <tr><td class="w3-signal-white">w3-signal-white</td></tr>
      <tr><td class="w3-signal-black">w3-signal-black</td></tr>
    </table>
​
​
</body>
</html>
实例代码
运行结果