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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="UTF-8">
<title>Bug 1472465</title>
<style type="text/css">
#container {
  border: 1px solid;
  width: 500px;
  height: 500px;
  overflow: hidden;
}

#box {
  opacity: 0.1;
  position: absolute;
  top: 100px
  left: 100px;
  z-index:1;
  background-color: green;
  width: 100px;
  height: 100px;
}

#bg {
  position:relative;
  width: 2500px;
  height: 2500px;
  left: 300px;
  top: 300px;
}
</style>

<script type="text/javascript">
function changeOpacity() {
  var box = document.querySelector("#box");
  box.style.opacity = "1.0";

  document.documentElement.removeAttribute("class");
}

function moveBg() {
  var bg = document.querySelector("#bg");
  bg.style.top = "0px";
  bg.style.left = "0px";

  setTimeout(changeOpacity, 200);
}

function doTest() {
  moveBg();
}

window.addEventListener("MozReftestInvalidate", doTest);
</script>

</head>
<body>
<div id="container">
    <div id="bg">
        <div id="box">
          Text to force layer state to inactive, that will get flattened.
        </div>
    </div>
</div>

</body>
</html>