html, body {
    margin: 0;
    padding: 0;
    font-family:'Microsoft YaHei';
}

a {
    color: #333333;
    text-decoration: none;
}

ul {
    margin: 0;
}

.pointer {
    cursor: pointer;
}

.clear_float:after {
    display: block;
    content: "";
    clear: both;
}

img {
    max-width: 100%;
    vertical-align: top;
}

.about {
    width: 100%;
}

.about-header {
    width: 100%;
}

    .about-header img {
        width: 100%;
    }

.about-title {
    margin-top: 45px;
    text-align: center;
    margin-bottom: 45px;
}

.about-about {
    width: 1197px;
    margin: 0 auto;
    margin-bottom: 33px;
}

.clearfix::after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
}

.about-about-frame {
    width: 50%;
    float: left;
}

.about-about-frame-text {
    font-size: 14px;
    margin-left: 52px;
    line-height: 26px;
    color: #808080;
}

.about-about-frame-text1 {
    font-size: 14px;
    margin-left: 52px;
    line-height: 26px;
    color: #808080;
    margin-top: 23px;
}

.about-advantages {
    width: 1200px;
    margin: 0 auto;
    cursor: default;
    margin-bottom: 50px;
}

.about-advantages-frame {
    width: 291px;
    height: 195px;
    float: left;
    margin-right: 12px;
    -webkit-transform-style: preserve-3d;
    -ms-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-transition: all 1s;
    -moz-transition: all 1s;
    -o-transition: all 1s;
    transition: all 1s;
}

    .about-advantages-frame:nth-of-type(4n) {
        margin-right: 0;
    }

.about-advantages-frame-flip {
    text-align: center;
    position: relative;
    width: 100%;
    height: 195px;
    -webkit-transform-style: preserve-3d;
    -ms-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-transition: all 1s;
    -moz-transition: all 1s;
    -o-transition: all 1s;
    transition: all 1s;
}

.about-advantages-frame:hover .about-advantages-frame-flip {
    -webkit-transform: rotateY(180deg);
    -ms-transform: rotateY(180deg);
    -moz-transform: rotateY(180deg);
    -o-transform: rotateY(7deg);
    transform: rotateY(180deg);
}

.about-advantages-frame-none {
    background: white;
    border: 1px solid #f1f1f1;
    color: #999999;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -ms-backface-visibility: hidden;
    backface-visibility: hidden;
}

    .about-advantages-frame-none img {
        margin-top: 60px;
        margin-bottom: 28px;
        width: 35px;
        height: 35px;
    }

.about-advantages-frame-text {
    font-size: 20px;
    line-height: 30px;
    width: 242px;
    margin: 0 auto;
}

.about-advantages-frame-hover {
    transform: rotateY(-180deg);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -ms-backface-visibility: hidden;
    backface-visibility: hidden;
    background: -webkit-linear-gradient(#1161ff, #02c1e6);
    background: -o-linear-gradient(#1161ff, #02c1e6);
    background: -moz-linear-gradient(#1161ff, #02c1e6);
    background: linear-gradient(#1161ff, #02c1e6);
    color: #ffffff;
    text-align: left;
}

    .about-advantages-frame-hover div:nth-child(1) {
        font-size: 22px;
        margin-top: 19px;
        margin-bottom: 29px;
    }

    .about-advantages-frame-hover div:nth-child(2) {
        font-size: 14px;
        line-height: 24px;
    }

.about-zizhi {
    width: 1200px;
    margin: 0 auto;
    margin-bottom: 60px;
}

.about-zizhi-frame {
    width: 291px;
    height: 151px;
    float: left;
    margin-right: 12px;
}

    .about-zizhi-frame:nth-of-type(4n) {
        margin-right: 0;
    }

.about-zizhi-frame-position {
    width: 100%;
    height: 100%;
    position: relative;
}

    .about-zizhi-frame-position img {
        box-shadow: 0px 3px 7px 0px rgba(0, 0, 0, 0.12);
        border-radius: 4px;
        width: 100%;
        height: 100%;
    }

.about-zizhi-frame-absolute {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.about-zizhi-frame-text {
    color: #ffffff;
    font-weight: bold;
    font-size: 16px;
    line-height: 30px;
    width: 249px;
    margin: 0 auto;
    margin-top: 14px;
    white-space: nowrap;
}

.about-contact {
    width: 1200px;
    margin: 0 auto;
    margin-bottom: 28px;
}

.about-contact-frame {
    width: 589px;
    float: left;
    margin-right: 21px;
}

    .about-contact-frame:nth-of-type(2) {
        margin-right: 0;
    }

.about-contact-frame-map {
    width: 100%;
    height: 350px;
    background-color: #eeeeee;
}

    .about-contact-frame-map img {
        width: 100%;
        height: 100%;
    }

.about-contact-frame-address {
    width: 100%;
}

.about-contact-frame-text {
    font-family: "Microsoft YaHei";
    font-size: 16px;
    color: #333333;
    line-height: 32px;
    margin-left: 10px;
    white-space: nowrap;
}

.about-contact-frame-address div:nth-child(1) {
    font-weight: bold;
    margin-top: 18px;
}

.about-contact-bg {
    background: #f9f9f9 url(../20190903image/about/CONTACT-bg.jpg) no-repeat center;
}