antd/lib/style/core/motion.less

An enterprise-class UI design language and React-based implementation

@import "../mixins/motion";
@import "motion/fade";
@import "motion/move";
@import "motion/other";
@import "motion/slide";
@import "motion/swing";
@import "motion/zoom";

// For common/openAnimation
.ant-motion-collapse {
  overflow: hidden;
  &-active {
    transition: height .2s @ease-out;
  }
}