@media screen and (max-width: 1200px) and (min-width:0px) {
  .itemBox {
    display: flex;
    flex-direction: column;
  }

  .itemBox .left {
    width: 100%;
    max-height: 500px;
    overflow: hidden;
  }

  .itemBox .right {
    width: 100%;
    padding-left: 30px;
  }

  .box4 .top {
    width: 100%;
    height: auto;
    padding-top: 45px;
  }
}