The footer's background color doesn't change, even with adding the custom code in the tutorials.

this is a must for good design abilities

Hello, could you create a template or block that includes some carousel-type images or video-like gifs with text overlay, or alternatively a header where the background is a giant image? I'll leave you some websites so you can see how I need them.

you can do this with the hero block. the variation with the background image. just delete the text. it renders well.

Agreed - even more options with full bg colour scheme, too

yes image and video background

image and video will be great