Firefox 63 on Mac works fine for me on this page. Spacebar, page-down, and scrollbar all work (i.e. the content moves a page at a time but horizontally).
Chrome 69 on linux scrolls horizontally at a much saner speed and has working arrow keys but is a fail in every other way mentioned. Firefox 65 on linux is a horrific user experience as described.
An article unlike a computer isn't a new exciting tech marvel it should be simple and work on any device that can render text and multimedia.
An article unlike a computer isn't a new exciting tech marvel it should be simple and work on any device that can render text and multimedia.