.pc-show {
        display: block !important;
    }

    .mobile-show {
        display: none !important;
    }

    .contactUs {
        font-size: calc((26/19.2)*1vw);

    }

    .contactUs .contentMainC {
        display: flex;
    }

    .banner {
        width: calc((810/19.2)*1vw);
    }

    .banner img {
        width: 100%;
    }

    .companyC {
        margin-top: calc((148/19.2)*1vw);
        margin-left: calc((212/19.2)*1vw);
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .textBorderB {
        display: inline-block;
        border-bottom: 2px solid rgb(204, 0, 0);
        font-size: calc((36/19.2)*1vw);
        padding-bottom: calc((20/19.2)*1vw);
        margin-bottom: calc((61/19.2)*1vw);
    }

    .companyImg {
        display: flex;
        margin-top: calc((25/19.2)*1vw);
    }

    .companyImg img {
        margin-right: 7px;
    }

    .companyCBoxB {
        margin-top: calc((201/19.2)*1vw);
    }

    .back {
        width: 123px;
        height: 34px;
        line-height: 34px;
        text-align: center;
        background-color: rgb(204, 0, 0);
        color: #fff;
        margin: 40px auto;
    }

    @media (max-width: 860px) {
        .pc-show {
            display: none !important;
        }

        .mobile-show {
            display: block !important;
        }

        .companyImg {
            margin-top: calc((20/3.75)*1vw);
        }
        .contactUs {
            font-size: 12px;
        }

        .textBorderB {
            font-size: 16px;
        }

        .contactUs .contentMainC {
            display: block;
        }

        .banner {
            width: 100%;
        }

        .companyC {
            margin-left: 0;
            padding: 0 calc((16/3.75)*1vw);
        }

        .companyCBoxB {
            margin-bottom: calc((148/19.2)*1vw);
        }
    }