.popup-grades-SpecialtyAdditives .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(1n) {
    background-image: url('https://plus.unsplash.com/premium_photo-1661962692059-55d5a4319814?w=600&auto=format&fit=crop&q=60&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxzZWFyY2h8MXx8YWdyaWN1bHR1cmV8ZW58MHx8MHx8fDA%3D');
    background-repeat: no-repeat;
    background-size: cover;
}

.popup-grades-SpecialtyAdditives .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(2n) {
    background-image: url('https://images.unsplash.com/photo-1492496913980-501348b61469?w=600&auto=format&fit=crop&q=60&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxzZWFyY2h8NHx8YWdyaWN1bHR1cmV8ZW58MHx8MHx8fDA%3D');
    background-repeat: no-repeat;
    background-size: cover;
}

.popup-grades-SpecialtyAdditives .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(3n) {
    background-image: url('https://images.unsplash.com/photo-1523741543316-beb7fc7023d8?q=80&w=1974&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D');
    background-repeat: no-repeat;
    background-size: cover;
}


.popup-grades-SpecialtyAdditives .popup-grades-wrapper .grades-right .swiper .swiper-slide:nth-child(4n) {
    background-image: url('https://plus.unsplash.com/premium_photo-1674624682288-085eff4f98da?w=600&auto=format&fit=crop&q=60&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxzZWFyY2h8MTN8fGFncmljdWx0dXJlfGVufDB8fDB8fHww');
    background-repeat: no-repeat;
    background-size: cover;
}