.swiper {
    width: 100%;
    height: 800px;
}
img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
@media screen and (max-width:480px) {
    .main-img-pc {
        display: none;
    }
}
@media screen and (min-width: 481px) and (min-width: 960px) {
    .main-img-sp {
        display: none;
    }
}