@media screen and (max-width: 1200px) {
  .banner .content-tit {
    font-size: 2.874rem;
  }
  .banner .content-mintit {
    font-size: 1.486rem;
  }
  .banner .banner-content .content-tit {
    margin-bottom: 5%;
  }
  .cma-box .cma {
    width: 93.6%;
  }
  .cma-box .cma .cma-item {
    width: 100%;
  }
  .cma-box .cma .cma-item:not(:last-child) {
    margin-bottom: 5.7%;
  }
  .cma-box .cma .cma-item:not(:nth-child(3n)) {
    margin-right: 0;
  }
  .cma-box .cma .cma-item .img-box {
    padding-bottom: 73.93%;
  }
  .cma-box .cma .cma-item .cma-content {
    padding-bottom: 21.79%;
  }
}