How to style Submit button on multiple page form?

Hi. When I style the “Submit” button, the “Next” and “Previous” buttons are styled, but the actual “Submit” button is not styled. I am guessing it is because I have a two-page form instead of a single page form?

How do I style the “Submit” button?

Also, the Button Position menu doesn’t seem to work for the “Submit” button. When I choose “Right” for the position of the button, the button doesn’t move to the right side of the form. Any way to fix this?

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