body {
    margin: 0;
    padding: 0;
    font-family: PingFang SC, tahoma, arial, microsoft yahei, hiragino sans gb, \5b8b\4f53,
      sans-serif;
  }
  .ad-banner {
    width: 100%;
    height: 80px;
  }
  .ad-banner img {
    width: 100%;
    height: 80px;
    object-fit: cover;
    background-repeat: no-repeat;
  }
  .ad-banner .bg {
    display: block;
  }
  .ad-banner .bg-min {
    display: none;
  }
  .h5-fixed__download {
    display: none;
    position: fixed;
    bottom: 10%;
    right: 2px;
    width: 48px;
    height: 52px;
    background: red;
    border-radius: 5px;
    color: #fff;
    text-align: center;
    font-size: 13px;
  }
  .h5-fixed__download a {
    display: inline-block;
    width: 100%;
    height: 18px;
    padding: 8px 0 2px;
  }
  .h5-fixed__download img {
    display: block;
    width: 18px;
    height: 18px;
    margin: 0 auto;
  }
  .h5-fixed__download .c-icon {
    color: #fff;
    font-size: 22px;
  }

  @media screen and (max-width: 750px) {
    .ad-banner {
      width: 100%;
      height: 0;
    }
    .ad-banner img {
      height: 100%;
    }
    .ad-banner .bg {
      display: none;
    }
    .h5-fixed__download {
      display: block;
    }
  }