<!DOCTYPE html>
<html>
<head>
  <style>
    .container {
        border: 1px solid black; /* Needed to disable simple color layer compositing. */
        height: 200px;
        width: 200px;
        transform: translateZ(0);
        background-color: rgba(0, 255, 0, 0.2);
    }
  </style>
</head>
<body>
    <p>Test for repaint in a transparent composited layer. The two squares below should be identical, green @ 20% alpha.</p>
  <div class="container"></div>
  <div class="container"></div>
</body>
</html>