There are 3 banner types made using the Landing Page Banner block and the Sub Page Banner block.
Both blocks have the same options:
Headline = name of the page (note: this is important as it'll be your H1)
Sub heading = large intro text for the page
Image = banner image
Background video = moving video instead of image. Please use Vimeo for this and add the URL. The video needs to be in 1:1 ration before it's uploaded to Vimeo. IF your video isn't 1:1 you can use the "Use 16:9 ratio" button to force it into 1:1.
Video URL = pop up video
Landing page banners
For landing pages, don't put in a layout just put in the Landing Page Banner block.
Sub Page Banner Block
Lower level pages
For lower level pages that don't need a big banner, use the Sub Page Banner block but only fill in the Headline