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Test Info:

<html style="white-space: pre; column-count: 2;">
<head></head>
<body onload="document.body.style.MozFloatEdge = 'margin-box'" style="column-width: 20em;">
<div style="position: relative; height: 80px; margin: 10px;">
<div style="position: absolute; height: 11px; top: 19px;"></div>
</div>
</body>
</html>