you should use colspan for your second row. like this :
colspan
<table> <tr> <td style="width:50%">text</td> <td style="width:50%">text</td> </tr> <tr> <td colspan="2" style="width:100%">text</td> </tr> ... </table>
for learn -> html colspan
you should use
colspan
for your second row. like this :for learn -> html colspan