Splitting a page into different sections vs. one long section

Hi all!

I’m new to Webflow and having trouble with a template.

Is there a way to create sections to something that has already been designed so I can have a different color background for parts of this homepage?

Right now, most of it is set to transparent, and when I change the color in one area it changes most of the site to that color.


Here is my site Read-Only: LINK
(how to share your site Read-Only link)