chromium/third_party/blink/web_tests/external/wpt/css/css-transforms/backface-visibility-hidden-005.html

<!DOCTYPE html>
<title>backface visibility: hidden creates containing block and stacking context when transformed</title>
<link rel="author" title="Matt Woodrow" href="mailto:[email protected]">
<link rel="help" href="http://www.w3.org/TR/css-transforms-1/#transform-property">
<link rel="help" href="http://www.w3.org/TR/css-transforms-2/#propdef-backface-visibility">
<link rel="match" href="backface-visibility-hidden-003-ref.html">

<p>The test passes if there is a green rectangle and no red.</p>
<style>
.background {
  width: 100px;
  height: 100px;
  background-color: green;
}

.flipper {
  backface-visibility:hidden;
  transform: rotateY(180deg);
  width: 100px;
  top: -100px;
  margin-top: -100px;
}

.scroll {
  overflow-y: scroll;
  width: 100px;
  height: 100px;
}

.inner {
  height: 900px;
  background: red;
}

</style>

<div class="background"></div>
<div class="flipper">
  <div class="scroll">
    <div class="inner">
    </div>
  </div>
</div>