.onChain {
    width: 100%;
    background: #f1f5fb;
  }
  .onChain p {
    margin: 0;
    padding: 0;
  }
  .onChain .flextit {
    display: flex;
    align-items: center;
    letter-spacing: 2px;
  }
  .onChain .title {
    padding: 70px 0 70px 0;
    width: 90%;
    max-width: 1300px;
    margin: 0 auto;
    color: #141e2a;
    font-size: 35px;
    position: relative;
  }
  .onChain .title .titleIntro {
    color: #666;
    font-size: 18px;
    margin: 20px 0 0 0;
  }
  .onChain .title .circle {
    font-size: 20px;
    padding: 0px 10px;
    color: #0f6fc2;
  }
  .onChain .title .tit {
    color: #0f6fc2;
  }
  .onChain .title .arrow {
    width: 82px;
    height: 14px;
    position: absolute;
    right: 0;
    bottom: 70px;
    background-image: url('../image/arrow.png');
    background-size: 100% 100%;
    background-position: center center;
    background-repeat: no-repeat;
  }
  .onChain .onchainBanner {
    max-width: 1300px;
    width: 90%;
    margin: 0 auto;
    padding: 0 0 100px 0;
    border-radius: 2px;
  }
  .onChain .onchainBanner .item {
    display: inline-block;
    width: 25%;
    text-align: center;
  }
  .onChain .onchainBanner .item img {
    width: 60%;
  }
  .onChain .onchainBanner .item .title {
    color: #000;
    font-size: 22px;
    margin: 20px auto;
    padding: 0;
  }
  .onChain .onchainBanner .item .intro {
    color: #bbb;
    font-size: 14px;
    width: 79%;
    margin: 0 auto;
    text-align: center;
    line-height: 26px;
  }