.banner {
  font-size: 0;
  width: 100%;
  max-width: 7.5rem;
  margin: 0 auto;
  background-color: #fff;
  display: flex;
  align-content: space-between;
  flex-wrap: wrap;
}
.banner > img {
  width: 100%;
  height: 3rem;
}

h3 {
  font-weight: 500;
  font-size: 0.36rem;
  color: #333333;
  height: 0.54rem;
  line-height: 0.54rem;
  margin: 0.36rem 0;
  text-align: center;
}