<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Painting of vertical assembly (reference)</title>
<style>
  .container {
      font-size: 50px;
      position: absolute;
      left: 1em;
      top: 1em;
      padding: 5px;
      background: green;
      width: 4em;
      height: 8em;
  }
</style>
<body>
  <p>This test passes if you see a green rectangle and no red.</p>
  <div class="container">
  </div>
</body>
