Mobile View Has Space at Bottom

I’m working on a site https://tinyhousereport.com and at the bottom of all “pages” there is what looks like a 1 or 2 pixel white space.

On single post pages there is no white space at the bottom.

I’ve been hunting this white space gremlin for hours and I’m convinced at this point I need psychiatric evaluation or someone to point me in the right direction.

Thanks!