// 该文档用于定义样式动画


// 拉下
.drop-down-enter-active
  transition transform .2s ease, opacity .2s ease
.drop-down-enter
  opacity 0
  transform translateY(-20px)

// popup 上方滑入
.uif-popup
.uif-modal
  &-enter-active
  &-mask-enter-active
    transition all .2s
  &-enter
    opacity 0
    transform translateY(-80px)
  &-mask-enter
    opacity 0