Space below sidebar widget for Sparkling WordPress theme

I am trying to get rid of some of the open space so we can have more content using the Custom CSS. I got some things done, but trying to reduce the space below each widget from 50px to 15px. My CSS just is not working.

Any help would be appreciated.

At secondhelpingslc.org

I think you have already fixed this issues. Or am I missing something?

No, not fixed yet. here is the CSS I am attempting, but clearly do not have right, since it does not change it.

#secondary widget, .widget {
margin-bottom: 15px;
}

Thanks

make sure to clean your browser cache and WP Super Cache because your given code is working perfectly fine on your website but you don’t see it because of some cache.

I may have solved it. I can re-open, or start a new one.

Now you have removed this code and there again is a gap that you wanted to remove.

#secondary .widget {
  margin-bottom: 15px;
}

Make sure to disable WP Super Cache plugin while you are working on your website because otherwise you won’t see any changes as you make them and will get confused just like you are now.