@media screen and (max-width: 1200px) and (min-width:0px) {
  .bannerbigbox {
    margin-top: 60px;
  }

  .box2 .container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .box2 .container .title {
    width: 100%;
    text-align: center;
    margin-bottom: 45px;
  }

  .iconBox {
    width: 25%;
    margin: 0;
    padding: 0 15px;
  }

  .iconBox .textBox p {
    width: 100%;
  }

  .box3 {
    display: flex;
    flex-wrap: wrap;
  }

  .box3>div {
    width: 100%;
  }

  .box4 {
    display: flex;
    flex-wrap: wrap;
  }

  .box4>div {
    width: 100%;
  }

  .box4 .left {
    padding: 60px 3vw;
  }
}