@media (max-width: 450px) {
    .swiper-slide.responsive-background {
        background-position: center !important;
        background-size: contain;
        background-position: center center;
        background-repeat: no-repeat;
        height: 200px;
        width: 431px;
    }
    .swiper-container.responsiveheight {
        height: 200px !important;
    }

}
@media (max-width: 750px) {
    .swiper-slide.responsive-background {
        background-position: center !important;
        background-size: contain;
        background-position: center center;
        background-repeat: no-repeat;
        height: 280px;
        width: 431px;
    }
    .swiper-container.responsiveheight {
        height: 300px !important;
    }

}