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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Popover ::backdrop pseudo element appearance</title>
<link rel="stylesheet" href="resources/popover-styles.css">
<style>
#bottom { top: 70px; left: 70px; }
#middle { top: 120px; left: 120px; }
#top { top: 170px; left: 170px; }
.fake-popover-backdrop {
height: 200px;
width: 200px;
}
#bottom-backdrop {
top: 50px;
left: 50px;
background-color: rgb(0, 50, 0);
}
#middle-backdrop {
top: 100px;
left: 100px;
background-color: rgb(0, 130, 0);
}
#top-backdrop {
top: 150px;
left: 150px;
background-color: rgb(0, 210, 0);
}
.fake-popover {
margin:0;
}
</style>
<p>Test for [popover]::backdrop presence and stacking order. The test passes
if there are 3 stacked boxes, with the brightest green on top.</p>
<div popover id=bottom>Bottom
<div popover id=middle>Middle
<div popover=manual id=top>Top</div>
</div>
</div>
<div id="bottom-backdrop" class="fake-popover-backdrop"></div>
<div id="bottom" class="fake-popover">Bottom</div>
<div id="middle-backdrop" class="fake-popover-backdrop"></div>
<div id="middle" class="fake-popover">Middle</div>
<div id="top-backdrop" class="fake-popover-backdrop"></div>
<div id="top" class="fake-popover">Top</div>
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