WordPress pages widget hacks

I would like to alter the code of the wordpress pages widget in order to put some spacing between each page that is listed on the sidebar. I tried adding padding-bottom; 10px, margin-bottom; 10px, margin; 10px, etc. but nothing seems to accomplish what I set out to do.

I would like a little bit of spacing between each of the listed pages in order to make it easier to differentiate between the pages listed. As of now there is no spacing between each listed page. See –> https://www.symposiarch.org, on the homepage sidebar.

Thank you in advance for any help you have to offer, it is greatly appreciated.