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Test Info:

<html>↩
<head>↩
<style>↩
*::after {↩
content: counters(bar, '', none);↩
}↩
</style> ↩
</head>↩
<body>↩
<table>↩
<thead></thead>↩
<th></th>↩
</table>↩
</body>↩
</html>↩