Welcome to the TRAINING page.
Here's where i'm trying to learn how this all works.
OK, this is the HEADER
That picture up there is the Thumbnail. Or it is if the "Page thumbnail as banner" is selected in Design/Style Editor under HEADER.
That gets created and adjusted in the CONFIGURE PAGE dialog box, opened by clicking the SETTINGS wheel for this page in the PAGES dialog box. I'm sort of finding my way around, and once in a while making it do what I wanted.
but the space for that image (the available height) is set in DESIGN/STYLE - Banner Area Height.
"Page Spacing" (Design/Main Content - at the bottom) sets the blank space between the heading image and the text.
So here's another CONTENT BLOCK, I think still in the HEADER. Let's see if I'm right.
This is just the PAGE, I think. Not header, not footer, not banner.
OK, Now I'm confused about CONTENT BLOCKS. The Header and footer use them, but not the main content?. Oh, wait, they do. Hover over the far left side of this section of the page and add one.
Somehow I got a Gallery/Carousel built, and stuck over to the left, and I don't know how I did it exactly.
And I figured it out. EDIT the page, grab and hold the image, and push it around. But it takes a second for the image 'shadow' to move around. This is driving the web, after all, not a local page. So give it time. Now play with the picture again.