w3css 在线编辑器 | w3css代码测试

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.cainiaomax.com/w3css/4/w3.css">
<body>

<div class="w3-container">
  <h2>可关闭标签</h2>
  <p>要关闭选项卡，请将 onclick="this.parentElement.style.display='none'" 添加到选项卡容器内的元素。</p>
  <p><strong>提示：</strong> w3-button 类可用于设置关闭按钮 (x) 的样式：</p>
</div>

<div id="London" class="w3-container w3-display-container city">
  <span onclick="this.parentElement.style.display='none'"
  class="w3-button w3-large w3-display-topright">&times;</span>
  <h2>伦敦</h2>
  <p>伦敦是英格兰的首都。</p>
</div>

<div id="巴黎" class="w3-container w3-display-container city" style="display:none">
  <span onclick="this.parentElement.style.display='none'"
  class="w3-button w3-large w3-display-topright">&times;</span>
  <h2>巴黎</h2>
  <p>巴黎是法国的首都。</p> 
</div>

<div id="Tokyo" class="w3-container w3-display-container city" style="display:none">
  <span onclick="this.parentElement.style.display='none'"
  class="w3-button w3-large w3-display-topright">&times;</span>
  <h2>东京</h2>
  <p>东京是日本的首都。</p>
</div>

</body>
</html>

报个问题: