Format Unit Navigation buttons/Links

Hi Gurus,

How do you format the following:

A) The “Next” button at the bottom of Unit Pages? I’d like the button to be much wider and be aligned to the center of the Page.

B) Format the “Save progress and Exit” link to look like a button with the same styles as the “Next” button.

C) Format the pagination menu at the bottom. background colors, border colors, font family, color.

D) I would like all three navigation items to be centered. Not left and right aligned as it is.

Thank kindly.