Catchbox – full screen width

Hi Is it possible to make the Catch Box theme go full width? It feels too crammed with a right sidebar. Also if you can get it full screen and someone tries reading it on a smaller sreen presumably it will cram it all in - but would it get rid of the sidebar to make space? i.e if someone is reading on an iPad then it is more important to have the main text than the sidebar. Finally (I havent tried this yes) but if i cannot get ful lwidth I suppsoe I coudl remove the sidebar to make my posts wider?