When you scroll a 2D scroller on a website, the browser does a lot of work behind the scenes to keep you on track. One of the things it typically does is scroll axis-locking (aka “railing”), ignoring some minor scroll deltas in the non-main scrolling axis. While helpful, this sometimes can get in the way of what you intend. With the new CSS scroll-axis-lock property you can disable the browser’s default scroll axis-locking behavior, allowing users to immediately perform a diagonal scroll.