These section edges are not straight.

It's almost as if the shapes are being used to... divide the sections.

No. It's not. It's really not good at all. But you can now if you want to. You can even us multiple shape dividers per section, layer them, position them top/bottom, flip them horizontally, adjust width and height, etc...

Z-index controls let us layer stuff in cool ways.

Paste in your own inline SVGs and use them as shape dividers.