<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CSS Background: background-attachment: background-attachment:fixed inside a transform</title>
    <link rel="author" title="Botond Ballo" href="mailto:botond@mozilla.com">
    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
    <style type="text/css">
      body {
        height: 4000px;
        margin: 0;
      }

      #outer {
        margin: 200px;
        height: 700px;
        width: 300px;
        transform: rotate(45deg);
        overflow: hidden;
      }

      #inner {
        height: 700px;
        background-image: radial-gradient(farthest-corner at center, blue, black);
        background-size: 300px 300px;
        background-position: 200px 200px;
        background-color: lime;
        background-repeat: no-repeat;
        background-attachment: scroll;
      }
    </style>
  </head>
  <body>
    <div id="outer">
      <div id="inner">
      </div>
    </div>
  </body>
</html>