.main_slide .swiper-container { width: 100%;
    height: 100vh; 
    }
    .main_slide .swiper-slide {text-align: center;font-size: 18px;background: #fff;height:100%;display: -webkit-box;display: -ms-flexbox; display: -webkit-flex;display: flex;-webkit-box-pack: center; -ms-flex-pack: center;-webkit-justify-content: center;justify-content: center; -webkit-box-align: center;-ms-flex-align: center; -webkit-align-items: center;align-items: center;}
    .main_slide .swiper-container-vertical>.swiper-pagination-bullets .swiper-pagination-bullet {margin: 50px 20px 50px 0;display: block;width: 12px;height: 12px;background: transparent !important;opacity: 1;border: 2px solid #fff;}
    .main_slide .swiper-container-vertical>.swiper-pagination-bullets .swiper-pagination-bullet-active{background: #fff !important;}