vant-weapp/packages/popup/index.pcss

@import '../common/index.pcss';

.van-popup {
  top: 50%;
  left: 50%;
  z-index: 11;
  max-height: 100%;
  overflow-y: auto;
  box-sizing: border-box;
  background-color: $white;
  -webkit-overflow-scrolling: touch;
  transform: translate3d(-50%, -50%, 0);

  &,
  &__overlay {
    display: none;
    position: fixed;
    animation: van-fade-in .3s ease;
  }

  &__overlay {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 10;
    background-color: rgba(0, 0, 0, 0.7);
  }

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

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

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

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

  &--show {
    display: block;
  }
}

@keyframes van-popup-top {
  from {
    transform: translate3d(-50%, -100%, 0);
  }
}

@keyframes van-popup-bottom {
  from {
    transform: translate3d(-50%, 100%, 0);
  }
}

@keyframes van-popup-left {
  from {
    transform: translate3d(-100%, -50%, 0);
  }
}

@keyframes van-popup-right {
  from {
    transform: translate3d(100%, -50%, 0);
  }
}