.popup-grades-cazn .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(1n) {
    background-image: url('../images/Ca-ZnStabilizers/SPCFlooring%20_%20Foam%20Boards%20_%20Profiles.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}

.popup-grades-cazn .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(2n) {
    background-image: url('../images/Ca-ZnStabilizers/PVCPipes.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}

.popup-grades-cazn .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(3n) {
    background-image: url('../images/Ca-ZnStabilizers/PVCFootwear.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}


.popup-grades-cazn .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(4n) {
    background-image: url('../images/Ca-ZnStabilizers/Cables&Wires.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}