vue-vben-admin/src/design/transition/fade.less

.fade-transition {
  &-enter-active,
  &-leave-active {
    transition: opacity 0.2s ease-in-out;
  }

  &-enter-from,
  &-leave-to {
    opacity: 0;
  }
}

.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.2s ease-in-out;
}

.fade-enter-from,
.fade-leave-to {
  opacity: 0;
}

/* fade-slide */
.fade-slide-leave-active,
.fade-slide-enter-active {
  transition: all 0.3s;
}

.fade-slide-enter-from {
  transform: translateX(-30px);
  opacity: 0;
}

.fade-slide-leave-to {
  transform: translateX(30px);
  opacity: 0;
}

// ///////////////////////////////////////////////
// Fade Bottom
// ///////////////////////////////////////////////

// Speed: 1x
.fade-bottom-enter-active,
.fade-bottom-leave-active {
  transition:
    opacity 0.25s,
    transform 0.3s;
}

.fade-bottom-enter-from {
  transform: translateY(-10%);
  opacity: 0;
}

.fade-bottom-leave-to {
  transform: translateY(10%);
  opacity: 0;
}

// fade-scale
.fade-scale-leave-active,
.fade-scale-enter-active {
  transition: all 0.28s;
}

.fade-scale-enter-from {
  transform: scale(1.2);
  opacity: 0;
}

.fade-scale-leave-to {
  transform: scale(0.8);
  opacity: 0;
}

// ///////////////////////////////////////////////
// Fade Top
// ///////////////////////////////////////////////

// Speed: 1x
.fade-top-enter-active,
.fade-top-leave-active {
  transition:
    opacity 0.2s,
    transform 0.25s;
}

.fade-top-enter-from {
  transform: translateY(8%);
  opacity: 0;
}

.fade-top-leave-to {
  transform: translateY(-8%);
  opacity: 0;
}