IE's box model made more sense, but everyone else coded to the standard. And yet, even IE9 has major CSS bugs. For example, say you want rounded corners. Cool

IE's box model made more sense, but everyone else coded to the standard. And yet, even IE9 has major CSS bugs. For example, say you want rounded corners. Cool, it does border-radius! For example, say you want gradients. Cool, it does ... well, sorta. ms-linear-gradient works fine on its own. border radius works on its own. But combine them together, and you're in for a world of hurt: The box shadow, and border radius, show up fine. But the radius doesn't clip off the corners from the gradient - so you get a perfectly weird looking element. I give them a B for effort, an F for actual usage.