.t_nav{
    background: #f5f5f5;
    margin: 0 0 30px 0;
          }
          .nav_a{
    display: flex;
    justify-content: center;
    align-items: center;
          }
    .nav_a a{
    width: 20%;
    display: block;
    line-height: 60px;
    text-align:center;
    font-size: 18px;
    }
    .nav_a a:hover{
      background: #fff;
      color: #093A95;
    }
    .nav_a .on{
      background: #fff;
      color: #3d9e13;
    }
    .text-tip{
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 20px 0 ;
        background: #fff;
        display: none;
    }
    .text-tip-title{
        font-size: 16px;
        text-align: center;
        font-weight: bold;
        color: #000;
    }
    .text-tip-text{
        width: 90%;
        margin-left: 5%;
        font-size: 14px;
        text-align: center;
        color: #000;
        padding-top: 20px;
        
    }
    .box-title{
        width: 100%;
        margin-bottom:50px;
        height: 100px;
    }
    .box-title-t{
        text-align: center;
        font-size: 28px;
        color: #666;
        line-height: 50px;
    }
    .box-title-b{
        text-align: center;
        font-size: 28px;
        font-weight: bold;
        line-height: 50px;
    }