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.