<!DOCTYPE html>
<!--
 | This test ensures that a non-positioned element with an opacity less than 1
 | is painted by its containing stacking context in the order used for child
 | stacking contexts and positioned elements. The results should draw the blue
 | rectangle in front of the green rectangle.
 |   https://www.w3.org/TR/css3-color/#opacity
 -->
<html>
<head>
  <style>
    .container {
      position: absolute;

      width: 150px;
      height: 150px;

      background-color: rgb(158, 158, 158);
    }
    .green {
      position: absolute;

      left: 20px;
      top: 20px;

      width: 80px;
      height: 80px;

      background-color: rgb(15, 157, 88);
    }
    .blue-container {
      position: static;

      opacity: .9;

      width: 150px;
      height: 150px;
    }
    .blue {
      position: static;

      width: 80px;
      height: 80px;

      background-color: rgb(66, 133, 244);
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="green"></div>
    <div class="blue-container">
      <div class="blue"></div>
    </div>
  </div>
</body>
</html>