#product-photo-viewer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    display: none;
    background-color: rgba(0, 0, 0, .8);
}

    #product-photo-viewer img {
        max-width: 90%;
        max-height: 90%;
    }

    #product-photo-viewer.open {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    #product-photo-viewer .image-wrapper {
        width: 90%;
        height: 90%;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }

        #product-photo-viewer .image-wrapper .photo-button-prev,
        #product-photo-viewer .image-wrapper .photo-button-next {
            z-index: 999;
            position: absolute;
            font-size: 30px;
            height: 100%;
            justify-content: center;
            align-items: center;
            text-shadow: 0 1px 1px rgba(0,0,0,.8);
            display: flex;
            width: 35px;
        }

        #product-photo-viewer .image-wrapper .photo-button-next {
            right: 10%;
        }

        #product-photo-viewer .image-wrapper .photo-button-prev {
            left: 10%;
        }

    #product-photo-viewer .swiper-container {
        width: 100%;
        height: 100%;
    }

@media only screen and (max-width: 640px) {
    #product-photo-viewer .image-wrapper .photo-button-next {
        right: 0;
    }

    #product-photo-viewer .image-wrapper .photo-button-prev {
        left: 0;
    }
}