Spacing inside pages

Hi there,

I’m using Generatepress theme for my website. Please see http://ispotted.net/forestry/research/

My question is: In that page ^ there is uneven space between the page content and the footer widget. How can I make it even? It’s the same case with all the pages (unless I get rid of the right sidebar widgets).

Secondly, is there a way to maybe combine the right widget with the page so that everything is in just one box? Not sure If im being clear here. But let me know. Thanks