I want to use a one-page theme for a client. If I am to design it myself or use an html theme as a starting point, how should I set up the structure? I am guessing I cannot design pages. I saw one theme like this in the marketplace. It is designed so every new block becomes a "slide" on the page. Seems OK, but what if I need several blocks in one slide. Can I use stacks like this also?

I am also guessing that if the different sections in a design have different styling, I have to define each of these as a custom design that I must choose under properties or design for each particular block.

Am I thinking correctly?