.nav-logo {
    width: 250px;
}

@media (max-width: 500px) {
    .nav-logo {
        width: 130px;
    }
    .swiper-banner-nine .swiper-button-next {
        top: 90%;
    }
        .swiper-banner-nine .swiper-button-prev {
        top: 90%;
    }
  }