I have an express checkout plugin that pops up a modal window with the checkout/cart page. This menu appears in this on mobiles, but should not (there is a cancel button for the modal).

It is also appearing part way down the window.

https://www.dropbox.com/s/gsbljmwx5yz5oij/IMG_4473.PNG?dl=0
https://www.dropbox.com/s/b3s2c6016y2zics/IMG_4474.PNG?dl=0

The page I need help with: [log in to see the link]