@media (max-width:768px) {
  .i-about .indgy-video video {
    position: absolute;
    z-index: 4;
    top: 0;
    left: 0;
    width: calc(100% - 16px);
    height: 170px;
    object-fit: cover;
    top: 8px;
    left: 8px;
    border-radius: 12px;
  }

  .obanner .bannerzi .box .t2 {
    font-size: 15px;
  }

  .obannerbg {
    height: auto;
  }

  .oimg1 {
    display: block;
  }

  .product .leftbox {
    display: none;
  }

  .culture .box ul {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .contact-left {
    float: left;
    width: 100%;
  }

  .contact-right {
    float: right;
    width: 100%;
  }

  .product {
    padding-top: 20px;
    padding-bottom: 25px;
  }
  .sonTitle{
      margin-bottom: 15px;
  }
  .contact .infor {
    margin-top: 20px;
    padding-bottom: 15px;
}  
}