But 80% availability is also pretty weak. Especially for CSS stuff where fallbacks are usually hard or impossible to implement cleanly. This isn't javascript w

But 80% availability is also pretty weak. Especially for CSS stuff where fallbacks are usually hard or impossible to implement cleanly. This isn't javascript where you can just throw a polyfill (and even there, you're usually trading in multiple kilobytes of polyfills for a random feature you could easily have worked around.)