.webmain .banner {
  height: auto;
  aspect-ratio: 1920 / 650;
  box-sizing: border-box;
}
.webmain .banner .swiper-wrapper,
.webmain .banner .swiper-slide,
.webmain .banner .swiper-slide > a { height: 100%; }
.webmain .banner .swiper-slide > a { display: block; }
.webmain .banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.webmain .wow { visibility: visible !important; }