how can I center an input inside a table

[Setzi138]

<tbody class="u-table-alt-grey-5 u-table-body">
                      <tr style="height: 55px;">
                        <b>
                        <td class="u-table-cell u-table-cell-1"><b>Produkt</b><span style="font-weight: 700;"></span>
                        </td>
                        <td class="u-table-cell"></td>
                        <td class="u-table-cell u-table-cell-3"><b>Einzelpreis</b></td>
                        <td class="u-table-cell u-table-cell-4"><b>Menge</b></td>
                        <td class="u-table-cell u-table-cell-5"><b>Gesamtpreis</b></td>
                        </b>
                      </tr>
                      <tr style="height: 55px;">
                        <td class="u-table-cell"> Chillistangerl</td>
                        <td class="u-table-cell"></td>
                        <td class="u-table-cell"> € 1,39</td>
                        <td class="u-table-cell"><input type='number' name='Menge' size='20'><br><br></td>
                        <td class="u-table-cell"></td>
                      </tr>

 

the input number sticks to the top of the table 

how can i center it ?

[requinix]

With vertical-align.