Is it possible to set background images or colors for a row ?

I’m wanting to move from Elementor to the native block editor.

I know to expect them to work differently. But I’m stuck on some basics.
I’m also finding it difficult to up-to-date documentation.

I’d like to know how about rows and how they work.

At the very least I’d like to know how to set background colors. And if possible, images. Is there any documentation for how to do this?

I’d also like to know if I can set the width and containing width of rows.

By ‘width’ I mean the total area of the row. Can I make a row stretch across the entire page area? Can I restrict the width?

Can I then set the width of the area that the columns are set to occupy?

Thanks.