.swiper-container {
  width: 100%;
  margin: 20px auto;
  --swiper-theme-color: #ffffff;
  --swiper-pagination-color: #ffffff;
}

.swiper-slide {
  text-align: center;
  font-size: 18px;
  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;
}

@media (max-width: 500px) {
  .ad-left {
    display: none;
  }
}