usa css .........
Cita: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="es">
<head>
<title>Untitled</title>
<style>
.tabla, .tabla td{
width:200px;
border:2px solid #FF9900;
border-collapse:collapse;
}
</style>
</head>
<body>
<table class="tabla">
<tr>
<td> </td>
<td> </td>
</tr>
</table>
</body>
</html>
los atributos que utlisas, ya no se usan en xhtml strict