Need help with TOC without CMS

I am trying to create a site with a sidebar table of contents that links to its respective content group in the main content section on the right, but am having trouble getting the page to scroll to the correct item when the ToC item is clicked.

Ideally, every content item (each group in the main content section) is linked to a heading in the left sidebar and when the user clicks on the left link, the page scrolls to the correct item.

I am having trouble making both sections overflow scroll and getting the page to scroll to the correct section.


Here is my site Read-Only: Webflow - C-K