css/css-transforms/3d-rendering-context-and-inline.html

<!DOCTYPE HTML>
<title>CSS Test (Transforms): 3D Rendering Context following DOM Tree (inlines)</title>
<link rel="author" title="L. David Baron" href="https://dbaron.org/">
<link rel="author" title="Google" href="http://www.google.com/">
<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#3d-rendering-contexts">
<meta name="assert" content="Blocks inside of inlines participate in 3D Rendering Contexts based on their parent, not their containing block.">
<link rel="match" href="transform-blank-ref.html">

<style>

.outer {
  display: block;
  width: 100px;
  height: 100px;
  transform-style: preserve-3d;
  transform: rotateX(90deg);
}

.middle {
  display: inline;
}

.inner {
  display: block;
  width: 100px;
  height: 100px;
  transform: rotateX(-90deg);
  background: red;
}

</style>

<p>Nothing should appear except this sentence.</p>

<div class="outer">
  <div class="middle">
    <div class="inner"></div>
  </div>
</div>