Changing Widget Spacing in Pinboard Theme

Hi!

I’ve tried reading through multiple other forum threads on this and nothing has worked yet. I’m using the Pinboard theme and have added numerous Image Widgets to the left sidebar, but do not want a space between them (they are the “Search By Color” color photos).

The site hasn’t gone live yet, but can be found at http://50.87.144.138/~mis/test2/

Thanks so much in advance for any help!!