@media only screen and (max-width: 768px) {

    /* 通用样式 */
    * {
        margin: 0;
        padding: 0;
        list-style: none;
        box-sizing: border-box;
        outline: none !important;
    }

    html {
        font-size: 100px;
    }

    .box1200 {
        margin: 0 auto;
        width: 12rem;
    }

    .top {
      background: url(./banner_app.png) no-repeat;
        background-size: 100%;
        height: 5rem;
    }

    .contentBox {
        width: 100%;
        margin: 0 auto;
        height: auto;
        background-color: #ffff;
        position: relative;
        top: 0;
        box-shadow: none;
        padding: .2rem 0;
    }

    .sec_left,
    .sec_right {
        float: none;
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        padding: 0 0.2rem;
    }

    .slideTxtBox2 .bt ul {
        font-size: .2rem;
    }

    .slideTxtBox2 .bt,
    .slideTxtBox3 .bt {
        width: 100%;
        height: 100%;
        line-height: .6rem;
        position: relative;
        clear: both;
        font-size: .2rem;
        border-bottom: 1px  solid #999999;
        padding: .20rem 0;
        display: flex;
    }

    .slideTxtBox3 .bt ul li:first-child {
        line-height: .6rem;
        padding: 0 .24rem;
    }

    .slideTxtBox2 .xx ul li {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        height: 0.8rem;
        line-height: .8rem;
        background: url(ty.png) no-repeat left center;
        background-size: .08rem;
        padding-left: 0.15rem;
        border-bottom: 1px solid #ECECEC;
    }

    .slideTxtBox3 .tu ul li {
        width: 50%;
        height: auto;
        float: left;
        margin: .1rem 0;
        padding: .3rem  0;
          background-size: 100% !important;
    }

    .slideTxtBox3 .tu ul li a {
        /* padding: .2rem; */
        /* margin: .1rem 0; */
    }

    .slideTxtBox2 .bt ul li {
        font-size: .20rem;
    }

    .slideTxtBox3 .tu ul li a .s_tilte {
        position: absolute;
        display: block;
        top: 50%;
        left: .4rem;
        right: 1rem;
        font-size: .24rem;
        text-align: left;
        padding: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        /* min-height: .8rem; */
        line-height: .38rem;
        transform: translateY(-50%);
    }

    .slideTxtBox2 .xx ul li a {
        font-size: 0.24rem;
        width: 100%;
        display: block;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        height: 0.8rem;
        line-height: 0.8rem;
    }

    .slideTxtBox2 .bt ul li.on {
        background-size: 3%;
        padding: 0 .24rem;
    }

    .contentbox2 {
        width: 100%;
        float: none;
        margin: 0 auto;
        padding: 0 0.2rem;
    }

    .contentbox3 {
        float: none;
        width: 100%;
        /* height: 100%; */
        margin: 0 auto;
        padding: 0 .15rem;
    }

    .slideTxtBox4 .tu ul li {
        width: 50%;
        float: left;
        margin: .1rem 0;
    }

    .slideTxtBox4 .tu ul li a .s_tilte {
        font-size: .16rem;
    }

    .slideTxtBox4 {
        margin-top: 0;
    }

    .slideTxtBox4 .tu ul li a .s_tilte {
        font-size: .24rem;
        position: absolute;
        /* width: 100%; */
        display: block;
        top: 50%;
        right: 1.2rem;
        left: 0.6rem;
        /* font-size: .22rem; */
        text-align: left;
        padding: 0;
        line-height: .24rem;
        transform: translateY(-50%);
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        min-height: 0.48rem;
        line-height: .36rem;
    }

    .slideTxtBox4 {
        margin-top: 0;
    }

    .slideTxtBox4 .bt ul li:first-child {
        padding-left: 0.15rem;
        font-size: .2rem;
        padding: 0 .24rem;
    }

    .slideTxtBox4 .tu ul li a {
        display: block;
        /* padding: 0 0.1rem; */
        margin: 0.1rem;
    }

    .slideTxtBox4 .tu {
        padding: .2rem 0;
    }
    .slideTxtBox3 .bt ul li a {
        font-size: .32rem;
        color: #1677ff;
        display: block;
    }
    .slideTxtBox4 .bt {
        width: 100%;
        height: 100%;
        line-height: .6rem;
        position: relative;
        clear: both;
        font-size: .2rem;
        border-bottom: 1px solid #999999;
        padding: 0.2rem 0;
        display: flex;
    }
    .slideTxtBox4 .bt ul li a {
        font-size: .32rem;
        color: #1677ff;
        display: block;
    }
    .slideTxtBox2 .bt ul li.on a {
        display: block;
        font-size: .32rem;
        color: #1677FF;
    }
}