How to Eliminate Extra Space at the Bottom of Pages

There is a lot of extra space at the bottom of my pages — like this one https://www.michiganracquetball.net/ram-hall-of-fame/ — that I’d like to get rid of.

I believe the extra space has something to do with my having turned comments off on all the pages, but I haven’t a clue how to get rid of the space. Any help would be much appreciated!