How To Reduce Space Between Gadgets (Widgets) in Blogger.com (blogspot)- - Screenshot

I recently made a small change to my another blog which is also on Blogger.com (Blogspot)- reduced the space between widgets at the side bar, to make the page looks little bit shorter. I'm satisfy with the change and it's a easy fix. If you are also looking for the solution for this issue, here's my fix.
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