Third edition (latest)
This edition introduced logical properties for better compatibility with different languages and their writing modes. It also updated the Frame component to use the
aspect-ratio property, which is now widely supported.
This edition converted a number of layouts to use the
gap property which has come to be widely supported with Flexbox as well as Grid. Using
gap simplifies many layouts and makes them easier to understand.
We actually added a lot more content after the initial release but we hadn’t started recording “editions” so all of those updates are implicitly part of the first edition.