Fix form overflow on 500 feedback form.
Fix form overflow on 500 feedback form.

For https://unisubs.sifterapp.com/projects/12298/issues/497682/comments

norayr/unisubs,norayr/unisubs,pculture/unisubs,ujdhesa/unisubs,eloquence/unisubs,eloquence/unisubs,ofer43211/unisubs,ReachingOut/unisubs,pculture/unisubs,wevoice/wesub,ReachingOut/unisubs,ofer43211/unisubs,ofer43211/unisubs,ujdhesa/unisubs,eloquence/unisubs,norayr/unisubs,ReachingOut/unisubs,wevoice/wesub,ujdhesa/unisubs,ujdhesa/unisubs,norayr/unisubs,pculture/unisubs,wevoice/wesub,ofer43211/unisubs,wevoice/wesub,ReachingOut/unisubs,pculture/unisubs,eloquence/unisubs