Technical Documentation Page - Anchor links

Hi, i’m creating the technical documentation page, using flexbox.
All is good except that the anchor link do not actually scroll to their respective id of their section:

How can i fix that?

The links in the nav menu appear to be working for me. For example, if I click on the “Hello world” link then the content on the right scrolls so that the “Hello world” heading is at the top of the viewport. Is this not happening for you? Or are you talking about something else?