I assume that you are talking about predefined bootstrap tables, not a grid. If you want to change all the elements paddingon one specific table, you can do something like this in your html:
EDIT I switched the code because the other code did not work.
Try this CSS:
.mytable>tbody>tr>td, .mytable>tbody>tr>th, .mytable>tfoot>tr>td, .mytable>tfoot>tr>th, .mytable>thead>tr>td, .mytable>thead>tr>th {
padding: 12px;
}
Add this class to the table.
<table class="table mytable">
table data here...
</table>
JS. , , !important CSS, .