.swiper-paginationIncrease-customs:nth-child(1):after {
    background: url("../image/product/service/icon_01.png") center no-repeat;
    background-size: contain;
}
.swiper-paginationIncrease-customs:nth-child(2):after {
    background: url("../image/product/service/icon_02.png") center no-repeat;
    background-size: contain;
}
.swiper-paginationIncrease-customs:nth-child(3):after {
    background: url("../image/product/service/icon_03.png") center no-repeat;
    background-size: contain;
}
.swiper-paginationIncrease-customs:nth-child(4):after {
    background: url("../image/product/service/icon_04.png") center no-repeat;
    background-size: contain;
}