.grid-x {
        max-width: 90rem;
        margin: 0 auto;
    }

    .head_box {
        width: 100%;
        background: #fff;
    }

    .head_box .head {
        height: 6rem;
        line-height: 6rem;
        margin: 0 auto;
        font-size: 3rem;
    }

    .head_box .head span {
        margin-left: 0.3rem;
    }

    .download_box {
        background: #f36030;
        background: url(/res/images/index/download_bd.jpg) 0 0/100% 100% no-repeat;
        position:relative;
    }

    .download_box .download {}

    .download_box .download .phone {
        max-width: 156%;
        max-height: 52rem;
        min-height: 18rem;
        margin-top: 6.2rem;

        margin-left: -17rem;
    }

    .download_box .download_title {
        font-size: 5rem;
        color: #fff;
        padding-top: 18rem;
        padding-bottom: 3rem;
    }

    .download_box .download_button {
        width: 20rem;
        height: 5.1rem;
        line-height: 5.1rem;
        text-align: center;
        border: 1px solid #fff;
        border-radius: 1rem;
        margin-top: 1.5rem;
        color: #fff;
        font-size: 2.8rem;
        cursor: pointer;
        display: inline-block;
    }

    .download_box .download_button img {
        margin-right: 0.5rem;
    }

    .download_box .erweima_box {
        margin-top: 5rem;
        text-align: center;
        font-size: 1.8rem;
        color: #fff;
    }

    .download_box .erweima_box>div {
        margin-top: 1rem;
    }

    .one {
        background: #fff;
        padding:2rem 0;
    }

    .two {
        background: #f6f6f6;
        padding: 2rem 0;
    }

    .three {
        background: #fff;
        padding: 2rem 0;
    }

    .margin_auto {
       max-width: 90rem;
        margin: 0 auto;
    }

    .footer {
        background: #f1f1f1;
        text-align: center;
        padding: 1rem;
        font-size: 0.8rem;
        color: #999999;
    }

    .download_button2 {
        text-align: center;
        padding-top: 6.8rem;
    }

    .erweima2 {
        display: none;
        background: #f6f6f6;
        padding: 1rem 0;
    }

    @media screen and (max-width: 1080px) {

        .margin_auto {
            padding: 0 2rem;
        }
        .head_box .head {
            padding: 0 2rem;
        }
    }

    @media screen and (max-width: 768px) {
        .download_button2 {
            text-align: center;
            padding-top: 2rem;
        }

        .erweima_box img {
            width: 13rem;
            margin-left: 2rem;
        }
        .download_box .erweima_box>div {
            margin-left: 2rem;
        }
        .download_box .download_button {
            width: 16rem;
        }
        .erweima2 {
            display: block;
        }
        .download_box .download_title {
            padding-top: 14rem;
            padding-bottom: 0;
        }
        .download_box .download .phone {

            margin-left: -3rem;
        }
    }

    @media screen and (max-width: 750px) {
        .head_box .head {
            height: 4rem;
            line-height: 4rem;
        }
        .head_box .head span {
            font-size: 1.7rem;
        }
        .head_box .head img {
            width: 2.5rem;
        }
        .download_box .download_title {
            padding: 5rem 0 0 0;
        }
        .download_box .download_button {
            width: 16rem;
            font-size: 1.8rem;
            height: 4rem;
            line-height: 4rem;
            margin-left: -2rem
        }
        .download_box .download_title {
            font-size: 2rem;    margin-left: -1rem;
}
        .erweima {
            width: 13rem;
            margin-top: 1rem;
        }
        .download_box .erweima_box {
            display: none;
        }
        .download_box .erweima_box>div {
            padding-bottom: 1rem;
        }
        .download_box .download .phone {
            margin-top: 3rem;
            max-width: 156%;
            margin-left: -5rem;
        }
    }

    @media screen and (max-width: 320px) {
        .download_button2 {
            padding-top: 0
        }
        .download_box .download_title {
            padding-top: 4rem;
        }
    }