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<!DOCTYPE html>
<html>
<head>
<style>
.pseudodialog {
height: 150px;
width: 150px;
position: absolute;
top: 0; right: 0; bottom: 0; left: 0;
margin: auto;
border: solid;
padding: 1em;
background: white;
color: black;
}
</style>
</head>
<body>
This tests that top layer elements are stacked correctly even if nested in the DOM tree.
The test passes if you see no red rectangles and see 3 rectangles stacked in the following order (from bottom to top): yellow, blue, green.
<div class="pseudodialog" style="top: 100px; background-color: yellow"></div>
<div class="pseudodialog" style="top: 150px; left: 50px; background-color: blue"></div>
<div class="pseudodialog" style="top: 200px; left: 100px; background-color: green"></div>
</body>
</html>