@include b(image-preview) {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  &-index {
    position: absolute;
    top: 10px;
    left: 50%;
    color: #fff;
    font-size: 14px;
    letter-spacing: 2px;
    transform: translateX(-50%);
  }
  &-swiper {
    position: relative;
    display: flex;
    align-items: center;
    height: 100%;
    &-item {
      float: left;
      img {
        width: 100%;
      }
    }
  }
}