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">
<h1><strong>w3-display-container</strong> 类</h1>

<p>在具有特定高度的 div 元素内显示内容：</p>
<div class="w3-display-container w3-green" style="height:300px;">
  <div class="w3-display-topleft">左上方</div>
  <div class="w3-display-topright">右上方</div>
  <div class="w3-display-bottomleft">左下方</div>
  <div class="w3-display-bottomright">右下方</div>
  <div class="w3-display-left">左</div> 
  <div class="w3-display-right">右</div> 
  <div class="w3-display-middle">中</div> 
  <div class="w3-display-topmiddle">中上</div> 
  <div class="w3-display-bottommiddle">中下</div>
</div>

<p>在图像中显示文本：</p>
<div class="w3-display-container w3-text-white">
  <img src="img_lights.jpg" alt="Lights" style="width:100%">
  <div class="w3-display-topleft w3-container"><p>左上方</p></div>
  <div class="w3-display-topright w3-container"><p>右上方</p></div>
  <div class="w3-display-bottomleft w3-container"><p>左下方</p></div>
  <div class="w3-display-bottomright w3-container"><p>右下方</p></div>
  <div class="w3-display-topmiddle"><p>中上</p></div>
  <div class="w3-display-left w3-container">左</div>
  <div class="w3-display-right w3-container">右</div>
  <div class="w3-display-middle w3-large">中间</div>
  <div class="w3-display-bottommiddle"><p>中下</p></div>
  <div class="w3-display-position w3-padding w3-red" style="top:100px;left:100px">定位</div>
</div>

<p>（我们添加了  w3-container 类和 p 元素以获得正确的填充）</p>
</div>

</body>
</html>

报个问题: