.banner {
  width: 100%;
  height: 9rem;
  background-color: #fff;
  display: flex;
  justify-content: center;
}

.banner > img {
    width: 100%;
    max-width: 19.2rem;
    height: max-content;
    display: block;
}

.banner-350 {
  width: 100%;
  height: 5rem;
  background-color: #fff;
  display: flex;
  justify-content: center;
}

.banner-350 > img {
  width: 19.2rem;
  height: 5rem;
}