chromium/third_party/blink/web_tests/external/wpt/css/css-backgrounds/background-attachment-local/attachment-scroll-positioning-1.html

<!doctype html>
<title>CSS Test: background-attachment: scroll; positioning area</title>
<link rel="match" href="attachment-scroll-positioning-1-ref.html" />
<meta name="flags" content="dom" />
<link rel="author" title="Simon Sapin" href="http://exyr.org/about/" />
<link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-attachment" />
<style>
div {
  background: url(aqua-yellow-32x32.png) no-repeat 100px 100px;
  overflow: hidden;
  height: 200px;
}
p {
  padding-top: 100px;
  height: 500px;
}
</style>
<div>
  <p>Test</p>
</div>
<script>
document.getElementsByTagName('div')[0].scrollTop = 60;
</script>