Blank no container + Widgets?

New to Bootstrap starter. Trying to fill customers request of full screen (edge to edge) view of SA Slider. Choosing blank – no container is the obvious choice, except I lose widgets in the footer area, and menu bar in the header. I hand code (username gives that away huh lol) so not using a block editor. One thought is a css snippet to let full width act like blank no container and keep widgets, menu, etc.

Thoughts?