Positioning Back/Next button above submit button

Hi have a multi-page form.

Can someone help me with the CSS required to position the next/back buttons above the submit button on a certain page?

My situation is that I ask for name/email on page 1, then on page 2 I ask if they would like to receive a phone call.

I want the first option they see to be a "Next" button where they can enter their phone number on the next page.

Or if they don't want a call they can submit the form right there.

But I want the Next button to be above the submit button.

Thank you.

We cannot change the fields order in HTML.

I would like to suggest showing the Next/Submit button based on a condition.

Example:

https://form.jotformpro.com/72017300405945?jumpToPage=2

Thank you.