<html>
<head>
  <title>Scaling and box-shadow</title>
  <style type="text/css" media="screen">
    #box {
      height: 100px;
      width: 100px;
      margin: 20px;
      background-color: gray;
      -webkit-transform-origin: top left;
      -webkit-box-shadow: 0px 20px 20px black;
      transform: scale(2);
    }
    
    #box.smaller {
      transform: scale(1);
    }
  </style>
</head>
<body>

<img id="box" class="smaller">

</body>
</html>