html,
body {
    position: relative;
    height: 100%;
    font-family: "Microsoft YaHei", 微软雅黑, "PingFang SC", "Hiragino Sans GB", STHeiti, sans-serif;
    min-width: 320px;
    width: 100%;
    position: relative;
}

body {
    background: rgba(247, 250, 255, 1);
    font-size: 14px;
    color: #000;
    margin: 0;
    padding: 0;
}

.title {
    width: 100%;
    height: 60px;
    background: rgba(255, 255, 255, 1);
    position: fixed;
    z-index: 99;

}

.title div {
    width: 1180px;
    height: 60px;
    background: rgba(255, 255, 255, 1);
    margin: auto;
}

.footer {
    font-size: 12px;
    font-weight: 400;
    color: rgba(153, 153, 153, 1);
    line-height: 18px;
    text-align: center;
    padding: 20px;
}

.banner {
    width: 100%;
    position: relative;
    z-index: 2;
    height: auto;
}

.banner img {
    display: block;
    max-width: 100%;
}

.banner img.mobile {
    display: none;
}

.title img {
    margin-top: 15px;
    width: 170px;
}

.title ul {
    overflow: hidden;
    float: right;
    margin-right: 80px
}

.title ul li {
    font-size: 16px;
    font-weight: bold;
    color: rgba(51, 51, 51, 1);
    line-height: 60px;
    float: left;
    padding-left: 40px;
    transition: all 0.5s;
    cursor: pointer;
}

.title ul li:hover {
    color: #2577FF;
    transition: all 0.5s
}

.title ul .btn {
    color: #2577FF;
    transition: all 0.5s
}

.bigbox {
    width: 1200px;
    margin: auto;
    overflow: hidden;
    margin-top: 30px
}

.bigbox .box {
    width: 380px;
    height: 274px;
    float: left;
    margin: 10px;
    background: rgba(255, 255, 255, 1);
    overflow: hidden;
}

.box div {
    width: 380px;
    height: 214px;
    overflow: hidden;
    position: relative;
}

.box img {
    width: 380px;
    height: 214px;
    transition: all 0.5s;

}

/*.box img:hover{*/
/*-webkit-transform: scale(1.2);*/
/*-moz-transform: scale(1.2);*/
/*-ms-transform: scale(1.2);*/
/*-o-transform: scale(1.2);*/
/*transform: scale(1.2);*/
/*transition:all 0.5s;*/

/*}*/
.box p {
    /*line-height: 60px;*/
    padding: 0 12px;
    font-size: 14px;
    font-weight: bold;
    color: rgba(51, 51, 51, 1);
}

.bigbox .box:hover {
    box-shadow: 0px 4px 16px 0px rgba(0, 0, 0, 0.1);
    transition: all 0.5s;
}

em {
    width: 60px;
    height: 60px;
    background: url(../img/play.png)no-repeat;
    background-size: cover;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    top: 77px;
    transition: all 0.5s;
}

.txt {
    height: 60px !important;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.two {
    display: none
}

@media only screen and (max-width: 768px) {
    * {
        box-sizing: border-box;
    }

    .banner img.web {
        display: none;
    }

    .banner img.mobile {
        display: block;
        width: 100%;
    }


    .bigbox {
        width: 100%;
        margin: auto;
        padding-top: 2.667vw;
    }

    .bigbox .box {
        width: 100%;
        height: 75.667vw;
        float: left;
        padding: 2.667vw;
        margin: 0 0 6vw 0;
        background-color: rgba(247, 250, 255, 1);
    }

    .box div {
        width: 100%;
        height: 60vw;
        position: relative;
    }

    .box .txt {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        justify-content: space-around;

    }

    .box img {
        width: 100%;
        height: 60vw;
        transition: all .5s;
    }

    .box em {
        width: 8vw;
        height: 8vw;
        background: url(data:image/png;base64,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) no-repeat;
        background-size: cover;
        position: absolute;
        left: 0;
        right: 0;
        margin: auto;
        top: 45%;
        transition: all .5s;
    }

    .box p {
        padding: 0 1.867vw;
        font-size: 3.733vw;
        font-weight: 700;
        color: #333;
        text-align: center !important;
        line-height: 11.5vw;
    }
}