.contact-wrapper {
    width: 100%;
    float: left;
    margin: 220px 0 100px;
}

.contact-content {
    width: 70%;
    margin: 0 auto;
}

.cntitle {
    float: left;
    width: 100%;
    margin: 0 0 40px;
    font-size: 38px;
    font-weight: 500;
}

.cn-subtitle {
    width: 100%;
    float: left;
    margin: 0 0 60px;
    font-size: 20px;
    line-height: 2em
}

.sidrbar-left {
    width: 70%;
    float: left;
    margin: 0 30% 0 0;
    line-height: 2em;
    font-size: 17px;
    letter-spacing: 0.1em
}

@media screen and (max-width: 1600px) {
    .contact-wrapper {
        margin: 180px 0 70px;
    }
}

@media screen and (max-width: 1200px) {
    .contact-wrapper {
        margin: 160px 0 55px;
    }

    .contact-content {
        width: 75%;
        margin: 0 auto
    }

    .cntitle {
        margin: 0 0 30px;
        font-size: 38px
    }

    .cn-subtitle {
        margin: 0 0 50px
    }
}

@media screen and (max-width: 980px) {
    .contact-wrapper {
        margin: 130px 0 40px;
    }

    .contact-content {
        width: 80%;
    }

    .cntitle {
        margin: 0 0 25px;
        font-size: 30px;
    }

    .cn-subtitle {
        margin: 0 0 40px
    }

    .sidrbar-left {
        width: 90%;
        margin: 0 10% 0 0
    }
}

@media screen and (max-width: 767px) {
    .contact-wrapper {
        margin: 100px 0 30px
    }

    .contact-content {
        width: 90%;
    }

    .cntitle {
        margin: 0 0 20px;
        font-size: 26px;
    }

    .cn-subtitle {
        margin: 0 0 25px;
        line-height: 1.8em
    }

    .sidrbar-left {
        width: 100%;
        margin: 0;
        line-height: 1.8em
    }
}

.about-bottom {
    width: 100%;
    float: left;
    margin: 0;
}

.bottom-content {
    width: 90%;
    height: 700px;
    margin: 0 auto 100px;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover
}

.bottom-tx {
    width: 40%;
    float: left;
    margin: 17% 30% 0;
    letter-spacing: 0.1em;
    text-indent: -0.1em;
    color: #fff;
    text-align: center;
}

.info-zx {
    width: 100%;
    float: left;
    font-size: 38px;
    font-weight: 500;
    margin: 0 0 40px;
    letter-spacing: 0.1em;
    text-indent: -0.1em
}

.info-stx {
    width: 100%;
    float: left;
    line-height: 2em;
    margin: 0;
    font-size: 17px;
}

@media screen and (max-width: 1600px) {
    .bottom-content {
        height: 600px;
        margin: 0 auto 70px;
    }

    .bottom-tx {
        width: 50%;
        margin: 17% 25% 0
    }
}

@media screen and (max-width: 1200px) {
    .bottom-content {
        height: 500px;
        margin: 0 auto 60px;
    }
}

@media screen and (max-width: 980px) {
    .bottom-content {
        height: 400px;
        margin: 0 auto 55px;
    }

    .bottom-tx {
        width: 70%;
        margin: 17% 15% 0
    }
}

@media screen and (max-width: 767px) {
    .bottom-content {
        height: 310px;
        margin: 0 auto 40px;
    }

    .bottom-tx {
        width: 85%;
        margin: 17% 7.5% 0
    }

    .info-zx {
        font-size: 26px;
        margin: 0 0 20px
    }

    .info-stx {
        ine-height: 1.8em;
    }
}