I am trying to create a pop up for this page:

I am trying to create a pop up for this page: http://xeniahospitality.com/big-view/

I need it to appear on desktop and mobile, but so far it's only appearing on mobile. I need to have it up as soon as possible, so any help you can give would be appreciated. Please reply to cdavidson@gogosidekick.com

Thank you,
Chris Davidson