Set padding in TIWCGJQMRegion

Hello,
I'm working on a layout with two content region, a secondary on the left and a primary on the right (like in your demo).
In the left content region I inserted a TIWCGJQMListBox.
The ListBox appear with a lot of space around (I don't know if is padding of the region or margin of the Listbox).
How can I set (decrease) the space around the ListBox ?
Thank you,
Davide
I'm working on a layout with two content region, a secondary on the left and a primary on the right (like in your demo).
In the left content region I inserted a TIWCGJQMListBox.
The ListBox appear with a lot of space around (I don't know if is padding of the region or margin of the Listbox).
How can I set (decrease) the space around the ListBox ?
Thank you,
Davide