.swiper-button-next,.swiper-button-prev {
    top: 50%;
    width: 50px;
    height: 50px;
    background-size: 50px 50px;
    background-position: center;
    background-repeat: no-repeat;
}
.swiper-button-prev,.swiper-container-rtl .swiper-button-next {
    background-image: url("http://productimg.yingtaoyun.com/0a/da/0ada329eb69ea9fc0c188cb898b64f7f.png!w320");
}
.swiper-button-next,.swiper-container-rtl .swiper-button-prev {
    background-image: url("http://productimg.yingtaoyun.com/bc/86/bc86aaa0c59ff097fba3ed79f98f07c5.png!w320");
}