Hi, I'm new to Drupal and I've been watching/reading courses and tutorials for days now and I can't find if what my client wants is possible.

Basically, they struggle to make content so they want to have pre-defined layout which they could add (at least one but not limited)to a page, and no other stuff.

They would like it to present itself more or less like in the picture attached.

I downloaded lots of modules but they don't seem to do what I would like

Can someone point me in the right direction? I didn't expect it to be so hard :-/