自定义 Swiper 的pageControl

.part5-bg .swiper2 .swiper-pagination2{
    bottom: 0.4rem;
}
/*未选中的小圆点样式*/
.part5-bg .swiper2 .swiper-pagination2 .swiper-pagination-bullet {
    width: 5px;
    height: 5px;
}

/*选中的小圆点样式*/
.part5-bg .swiper2 .swiper-pagination2 .swiper-pagination-bullet-active{
    width: 5px;
    height: 5px;
}