: 100%;">
        <tr>
          <td style="width: 25%;">row 1, col 1</td>
          <td style="width: 25%;">
            <table style="width: 100%;">
              <tr>
                <td style="width: 50%;">t2, row 1, col 1</td>
                <td style="width: 50%;">t2, row 1, col 2</td>
              </tr>
              <tr>
                <td>t2, row 2, col 1</td>
                <td>t2, row 2, col 2</td>
              </tr>
              <tr>
                <td>t2, row 3, col 1</td>
              