Padding in table row when adding a select

[Alper]

Hello

I have the following table.

        <table class='table table-striped table-bordered'>
            <tr>
                <th>Period</th>
                <th>Action</th>
            </tr>
            <tr>
                <td>Dec 2011</td>
                <td><select id="item_SelectedAction123" 
name="item.SelectedAction"><option value="No Action">No 
Action</option></select></td>
            </tr>
        </table>

Without the select element in the table; table row is 35px tall. When I add 
the select element table row is 54px tall. 

How can avoid the select element increasing the height of each cell? I 
tried setting margin and padding to 0.

Thanks..