I wanted to see what exactly is this project. There is no way to go back to vanillaos.org from handbook.vanillaos.org without manually editing the URL bar, at least on mobile. This is so frustrating.
Since it is such a common need, maybe there should be a browser button for it instead of requiring every page to code their own?
With vimium you hi gU to go to the root of the page. Availlable for FireFox and Chromium based browsers. Content user.