What is the proper way to do a mobile popup? I have a modal slide in that is too big on mobile. I would obviously rather use the same popup and have the modal be responsive, but couldn't figure that out. So I set targeting to desktop only, duplicated the popup and am targeting that one to mobile only. However, I still can't figure out how to make it smaller. I am sure I could put in custom CSS but I'm surprised the out of the box forms aren't mobile friendly. (this one is using Rainer)