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HTML
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>阴影 - 鼠标悬浮时加深阴影</title>
  <link rel="stylesheet" href="//mdui-aliyun.cdn.w3cbus.com/source/dist/css/mdui.min.css"/>
</head>
<body>

<div class="mdui-container">
  <div class="mdui-card mdui-hoverable" style="max-width: 400px;margin-top: 20px;">
    <div class="mdui-card-media">
      <img src="//mdui-aliyun.cdn.w3cbus.com/docs/assets/docs/img/card.jpg"/>
    </div>
    <div class="mdui-card-actions">
      <button class="mdui-btn mdui-ripple">action 1</button>
      <button class="mdui-btn mdui-ripple">action 2</button>
    </div>
  </div>
</div>

<script src="//mdui-aliyun.cdn.w3cbus.com/source/dist/js/mdui.min.js"></script>
</body>
</html>
CSS

    
JavaScript