bootstrap 3 border-radius less mixin gone
Aha! I have located the answer… Remove .border-radius() and .border-*-*-radius mixins. As only Android 2.1, iOS 3.2, and older desktop browsers require a prefixed version, we’ve removed the base mixin. Since we no longer require prefixes for independent corners, we’ve dropped those mixins as well. Mixins for a single side, like .border-left-radius, are still available. … Read more