.product-detail-gallery__slider {
  /*  --slider-max-height: var(--slider-max-width);
    --slider-max-width: 300px;*/
  
    --slider-max-height: auto;
    --slider-max-width: 100%;
  
  
    display: block;
    margin: auto;
    max-height: calc(var(--slider-max-height) + 25px);
    max-width: var(--slider-max-width);
  }
  .product-detail-gallery__container {
    --padding-top: 0;
    padding-top: var(--padding-top);
  }
  .product-detail-gallery__slider.square_big {
    --slider-max-width: 900px;
  }
  
  @media screen and (min-width: 768px) {
    .product-detail-gallery__slider {
    --slider-max-width: 450px;
    }
    .product-detail-gallery__container--vertical  .product-detail-gallery__slider--big,
    .product-detail-gallery__container--vertical .product-detail-gallery__slider--big--magnifier
     {
      min-height: 450px;
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 2;
      
    }
    .product-detail-gallery__slider.horizontal {
      --slider-max-width: 600px;
      --slider-max-height: 450px;
    }
    .product-detail-gallery__slider.vertical {
      --slider-max-height: 600px;
    }
  }
  
  .product-container .product-detail-gallery__picture {
    max-height: var(--slider-max-height);
  }