@media only screen and (max-width:768px) {
  .topbannerBox{
    height: 3rem;
    background-size: cover;
  }
  .topbannerBox h1{
    width: 100%;
    font-size: .52rem;
    margin-left: .24rem;
  }
  .contentBox{
    width: 100%;
    padding: .6rem 0;
  }
  .contentBox ul{
    flex-wrap: wrap;
    padding: 0 .24rem;
  }
  .contentBox ul li{
    width: 100%;
    height: 3.63rem;
    align-content: center;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: .52rem;
  }
  
  .contentBox ul li p{
    width:100%;
    margin-bottom: .6rem;
    font-size: .4rem;
  }
  .contentBox ul li a{
    font-size: .22rem;
    width: 2.03rem;
    height: .6rem;
    border-radius: .3rem;
    line-height: .6rem;
  }
  .contentBox ul li a img{
    width:.29rem;
    height:.29rem;
  }
}