message: CellSwipe: code review
diff: -.van-cell {
  - &-swipe {
  - position: relative;
  - min-height: 48px;
  +.van-cell-swipe {
  overflow: hidden;
  + position: relative;
  - .van-cell-wrapper,
  - .van-cell-left,
  - .van-cell-right {
  - transition: transform 150ms ease-in-out;
  - }
  + &__wrapper,
  + &__left,
  + &__right {
  + transition: transform .15s ease-in-out;
  }
  - &-left,
  - &-right {
  - position: absolute;
  - height: 100%;
  + &__left,
  + &__right {
  top: 0;
  + height: 100%;
  + position: absolute;
  }
  - &-left {
  + &__left {
  left: 0;
  transform: translate3d(-100%, 0, 0);
  }
  - &-right {
  + &__right {
  right: 0;
  transform: translate3d(100%, 0, 0);
  }
  