.solutionDetail {}
/* 导航 */
.nav {
    width: 1300px;
    margin: 30px auto;
    color: #8b8b8b;
    /* font-size: 24px; */
  }
  
  .nav span:nth-child(1):hover {
    cursor: pointer;
    color: #428bca;
    display: inline-block;
    border-bottom: 1px solid #428bca;
  }
  .nav span:nth-child(3):hover {
    cursor: pointer;
    color: #428bca;
    display: inline-block;
    border-bottom: 1px solid #428bca;
  }
  .nav span:nth-child(5):hover {
    cursor: pointer;
    color: #428bca;
    display: inline-block;
    border-bottom: 1px solid #428bca;
  }
  .nav span:nth-child(7):hover {
    cursor: pointer;
    color: #428bca;
    display: inline-block;
    border-bottom: 1px solid #428bca;
  }

  .main img{
    width: 1920px; height: 236px;width: auto; height: auto; max-width: 100%; max-height: 100%;
  }