In the Supported Rendering Features page, the sidebar ‘table of contents’ and the when opened, the new Feedback pop-open, both cover over the last column of the page’s features table. Only one row near the bottom of the page is visible when scrolling. This is in Firefox 76.0.1, though it’s most likely in other browsers too. It may be because the screen I’m viewing on is not FHD, but it’s still important to ensure it’s viewable on different screen sizes, even lower resolution ones.
