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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="common.css">
<script type="text/javascript" src="utils.js"></script>
<style>
body {
font-family: monospace;
}
.annotation, .annotation > div {
position: absolute;
}
</style>
</head>
<body>
<div style="height: 8em; line-height: 8em;">
<div style="display: inline-block;">
<div class="annotation">
<div style="top: -100%;"><span>over##</span></div>
<div style="top: 100%;"><span>under#</span></div>
<div style="top: -200%;"><span>over2#</span></div>
<div style="top: 200%;"><span>under2</span></div>
<!-- to give container the proper block-axis size -->
<span> </span>
</div>
<span>base##</span>
</div>
</div>
<script type="text/javascript">
makeBSizeOfParentMatch(document.getElementsByTagName('span'));
</script>
</body>
</html>