Hi,AR is width:height.So if you are thinking about an iPad for example,
it should be about 3:4. (more tall than wide). For now, we don't have
the ability to specify a card to be exact "full screen", but it is on
our list as future enhancements.Similarly, we don't have yet the ability
to specify cards that "snap" (stoping at each card). The browse-pages
are just smooth scrolling for now.