vant-weapp/packages/popup/index.less

@import '../common/style/var.less';

.van-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  max-height: 100%;
  overflow-y: auto;
  background-color: @white;
  box-sizing: border-box;
  animation: ease both;
  -webkit-overflow-scrolling: touch;
  transition-timing-function: ease;

  &--center {
    transform: translate3d(-50%, -50%, 0);
  }

  &--top {
    top: 0;
    right: auto;
    bottom: auto;
    left: 50%;
    width: 100%;
    transform: translate3d(-50%, 0, 0);
  }

  &--right {
    top: 50%;
    right: 0;
    bottom: auto;
    left: auto;
    transform: translate3d(0, -50%, 0);
  }

  &--bottom {
    top: auto;
    right: auto;
    bottom: 0;
    left: 50%;
    width: 100%;
    transform: translate3d(-50%, 0, 0);
  }

  &--left {
    top: 50%;
    right: auto;
    bottom: auto;
    left: 0;
    transform: translate3d(0, -50%, 0);
  }

  &--safe {
    padding-bottom: @safe-area-inset-bottom;
  }
}

.van-scale-enter-active,
.van-scale-leave-active {
  transition-property: opacity, transform;
}

.van-scale-enter,
.van-scale-leave-to {
  opacity: 0;
  transform: translate3d(-50%, -50%, 0) scale(0.7);
}

.van-fade-enter-active,
.van-fade-leave-active {
  transition-property: opacity;
}

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

.van-center-enter-active,
.van-center-leave-active {
  transition-property: opacity;
}

.van-center-enter,
.van-center-leave-to {
  opacity: 0;
}

.van-bottom-enter-active,
.van-bottom-leave-active,
.van-top-enter-active,
.van-top-leave-active,
.van-left-enter-active,
.van-left-leave-active,
.van-right-enter-active,
.van-right-leave-active {
  transition-property: transform;
}

.van-bottom-enter,
.van-bottom-leave-to {
  transform: translate3d(-50%, 100%, 0);
}

.van-top-enter,
.van-top-leave-to {
  transform: translate3d(-50%, -100%, 0);
}

.van-left-enter,
.van-left-leave-to {
  transform: translate3d(-100%, -50%, 0);
}

.van-right-enter,
.van-right-leave-to {
  transform: translate3d(100%, -50%, 0);
}

.van-none-enter-active,
.van-none-leave-active {
  transition-duration: 1ms !important;
  transition-property: opacity;
}

.van-none-enter,
.van-none-leave-to {
  opacity: 0.999;
}