.div2 {
    width: 100%;
    height: 620px;
    overflow: hidden;
    background: #183573;
}

.div2 .left {
    width: 50%;
    float: left;
    height: 100%;
    overflow: hidden;
    border-right: 1px solid #fff;
    opacity: .5;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
}

.div2 .right {
    width: 50%;
    float: left;
    height: 100%;
    background-color: #183573;
}

.div2 .right .tit {
    color: #fff;
    padding: 130px 60px 0px 60px;
    box-sizing: border-box;
    height: 160px;

}

.div2 .right .tit h4 {
    display: inline-block;
    font-family: MicrosoftYaHei;
    font-size: 24px;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 0px;
    color: #ffffff;
}

.div2 .right .tit span {
    font-family: MicrosoftYaHei;
    font-size: 16px;
    font-weight: normal;
    letter-spacing: 0px;
}

.div2 .right .leftline {
    width: 100%;
    height: 100px;
    border-left: 3px solid #ffffff;
    overflow: hidden;
    margin-left: -2px;
}

.div2 .right .leftline .line {
    height: 1px;
    width: 100%;
    background: #fff;
    margin-top: 50px;
    opacity: 0.5;
}

.div2 .right .imgcont {
    height: 126px;
    width: 100%;
    padding: 0px 60px 0px 60px;
    box-sizing: border-box;
    margin-top: 50px;
}

.div2 .right .imgcont .imgnav {
    width: 100%;
    height: 100%;
}

.div2 .right .imgcont .imgnav li {
    height: auto;
    width: 15.12%;
    opacity: .5;
    float: left;
    margin-left: calc((18% -126*5px)/4);
    overflow: hidden;
}

.div2 .right .imgcont .imgnav li img {
    height: auto;
    width: 100%;
}

.div2 .right .imgcont .imgnav li .detail {
    width: 100%;
    margin-top: 46px;
    color: white;
    text-align: center;
}

.div2 .right .imgcont .imgnav .opa {
    opacity: 1;
}



@media (max-width: 640px) {
    .div2{ height: auto;}
    .div2 .left ,.div2 .right{
        display: block;
        width:100%
    }
    .div2 .right .tit {
        color: #fff;
        padding: 20px 60px 0px 20px;
        box-sizing: border-box;
        height: 100px;
    }

    .div2 .right .imgcont{
        height:150px;
        width: 100%;
        padding: 0px;
        box-sizing: border-box;
        margin-top: 8px;
    }
    .div2 .right .imgcont .imgnav li{
        width: 25%;

        margin-left:5%;
        margin-top: 20px;
        padding: 10px;
    }
    .div2 .right .imgcont .imgnav li .detail {
        width: 100%;
        margin-top: 10px;
        color: white;
        text-align: center;
    }
    .div2 .right .leftline {
        width: 100%;
        height: 1px;
        border-left: 3px solid #ffffff;
        overflow: hidden;
        margin-left: -2px;
    }
}