@media(min-width:320px) and (max-width:640px) {

    body,
    html {
        height: 100%;
        width: 100%;
    }

    * {
        margin: 0;
        padding: 0;
    }

    .container {
        height: 100%;
        width: 100%;
        padding: 0 !important;
    }

    .title {
        display: flex;
        flex-direction: row;
    }

    #drawer_content {
        position: fixed;
        top: -950px;
        left: 0;
        width: 100%;
        max-height: 100%;
        background-color: #f5f5f5;
        transition: top 0.3s ease-in-out;
        overflow-y: auto;
    }

    #drawer_content.open {
        top: 50px;
    }

    .draw {
        height: 950px;
        background-color: #ffffff;

        >div:nth-child(1) {
            color: #B9984D;
        }

        >div {
            position: relative;
            height: 40px;
            line-height: 40px;
            padding-left: 10%;
            color: #666666;
            font-size: 14px;
        }

        >div::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 200%;
            height: 1px;
            background: #e6e6e9;
            transform: scale(0.5);
            transform-origin: 0 0;
        }

        >div:nth-child(5) {
            display: flex;
            border-bottom: 1px solid #f3f2f2;
        }
    }

    .right {
        color: grey;
        display: flex;
        margin-left: 60%;
        font-size: 24px;
    }

    .mobile_link {
        display: none;
        margin-left: 10%;
        color: #666666;
        font-size: 14px;
        position: fixed;
        transition: top 0.3s ease-in-out;

    }


    .iconfont {
        font-size: 25px !important;
        line-height: 50px;
        margin-left: 20px;
        color: grey;
    }

    .btn-primary {
        font-size: 25px !important;
    }

    .iconfont::after {
        content: none !important;
    }

    .title {
        height: 50px;
    }

    .title_left {
        font-size: 17px;
        width: 100%;
        height: 50px;
        line-height: 50px;
        text-align: center;
        margin-right: 58.81px;
        color: #B9984D;
        font-family: Arial, Helvetica, sans-serif, "微软雅黑", sans-serif;
    }

    .title_right {
        display: none;
    }

    .dropdown-menu.show {
        height: 100%;
        width: 100%;
        margin-top: 40px;
    }

    .btn-primary {
        color: grey !important;
        background-color: #ffffff !important;
        border-color: #ffffff !important;
    }

    .banner {
        background-image: url('/img/img11.jpg');
        width: 100%;
        height: 200px;
        background-size: cover;
    }

    .vedio {
        display: none;
    }

    .about {
        height: 200px;
    }

    .about_img {
        display: none;
    }

    .more_common {
        text-align: center;
        line-height: 40px;
        height: 40px;
        width: 40%;
        background-color: #B9984D;
        color: #ffffff;
        border-radius: 3px;
        font-size: 18px;
        margin: auto;
        margin-top: 10px;
    }

    .text_common {
        color: #777777;
        line-height: 26px;
        margin-left: 1%;
        margin-right: 1%;
        font-family: Arial, Helvetica, sans-serif, "微软雅黑", sans-serif;
        font-size: 14px;

        >span {
            display: inline-block;
        }
    }

    .title_common {
        font-size: 22px;
        color: #B9984D;
        font-weight: bold;
        margin-left: 2%;
        margin-top: 2%;
        margin-bottom: 2%;
        font-family: Arial, Helvetica, sans-serif, "微软雅黑", sans-serif;
    }

    .product_left {
        >div:nth-child(2) {
            text-align: center;
            margin: auto;
            height: 0%;
            width: 50%;

            >img {
                height: 100%;
                width: 100%;
                background-size: cover;
            }
        }
    }

    .product_right {
        width: 100%;
        text-align: center;

        >img {
            width: 45%;
            flex-wrap: wrap;
            padding: 2%;
        }

    }

    .design {
        position: relative;
        z-index: -99;
        margin-top: 2%;
    }

    .design_img {
        background-image: url('./img/img9.jpg');
        width: 60%;
        height: 230px;
        position: absolute;
        background-size: cover;
    }

    .design_left {
        height: 230px;

        >div:nth-child(2) {
            position: absolute;
        }
    }


    .design_right {
        width: 100%;
        height: 100%;
        text-align: center;

        >img {
            height: 100%;
            width: 94%;
        }
    }

    .design2_img {
        display: none;
    }

    .design2_text {
        margin: 5% 2% 5% 2%;
    }

    .news {
        margin-right: 2%;
    }

    .news_content {
        margin-left: 2%;

        >div {
            margin-top: 10%;
        }
    }

    .title_c2 {
        color: #999999;
        font-size: 12px;
    }

    .title_c3 {
        line-height: 20px;
        margin-top: 1%;
        color: #666666;
        font-family: Arial, Helvetica, sans-serif, "微软雅黑", sans-serif;
        font-size: 12px;
    }

    .contact {
        height: 200px;
    }

    .contact_img {
        width: 100%;
        height: 100%;
        background-image: url('../img/img8.jpg');
        background-size: cover;

        >div {
            text-align: center;
        }

        >div:nth-child(1) {
            color: #ffffff;
            font-size: 14px;
            padding-top: 3%;
        }

        >div:nth-child(2) {
            color: #B9984D;
            font-size: 26px;
            font-weight: bold;
            font-family: Arial, Helvetica, sans-serif, "微软雅黑", sans-serif;
        }

        >div:nth-child(3) {
            color: #ffffff;
            font-size: 14px;
            font-family: Arial, Helvetica, sans-serif, "微软雅黑", sans-serif;
            letter-spacing: 1px;
            line-height: 20px;
            width: 90%;
            margin: auto;

        }

        >div:nth-child(4) {
            background-color: #B9984D;
            width: 150px;
            color: #ffffff;
            margin: auto;
            height: 50px;
            line-height: 50px;
            margin-top: 3%;
        }
    }

    .contact_tel {
        display: flex;
        flex-direction: column;
        justify-content: space-around;

        >div:nth-child(3) {
            display: none;
        }
    }

    .contact_tel,
    .contact_bot {
        background-color: #191a1a;
        height: 100px;
        border: 1px solid #191a1a;
        color: #484848;
        text-align: center;
        font-size: 14px;
    }

}