<head>
</head>
<body>
<table style="border:1px solid blue">
<thead style="display: table-cell; border-collapse: collapse; border:1px solid red; padding:1px">
<td style="display: table-header-group; border:1px solid green"></td>
<td style=" border:10px solid orange" ></td>
</thead>
</table>
</body>