What's wrong with this table header code?
<table> <theader> <tr><th>Header</th></tr> </theader> </table>
<tr> should be <td>
<tr>
<td>
<th> should be <td>
<th>
<theader> should be <thead>
<theader>
<thead>
Header should be inside a <span>
Header
<span>