Pin sticky action bar to bottom of sheet

Axure query.rp (1.6 MB)

Hello, looking for some advice please. I’ve recently started prototyping with Axure again using another tool for a long time. I’m looking for a way to pin a set of buttons to the bottom of a “sheet” component which contains a form. (Next button and back link). I’ve managed to pin it to the bottom of the browser window, but currently, when in simulation mode, the dynamic panel moves left and right, when the browser window is resized - my goal is to fix it so it appears as a sticky set of actions associated with the form when the user scrolls vertically.