/*介绍*/



.box1_bottom {
    position: relative;
    margin: 0 auto;
    top: 74vh;
    width: 1200px;
    left: 11%;
    display: flex;
}
.box3_left .box3_mc {
    width: 59.3vh;
    height: 37.4vh;
}
.box3_mc {
    width: 39.1vh;
    height: 15.4vh;
}
.box3_left .box3_mc p {
    line-height: 37vh;
}
.box3_mc p {
    text-align: center;
    line-height: 14vh;
    color: #fff;
}
.box4_mc {
    position: absolute;
    width: 9vh;
    height: 9vh;
    border: 2px solid #fff;
    border-radius: 50%;
    margin: 15.32vh 22.0vh;
    opacity: 0;
}
.box4_mc p {
    text-align: center;
    margin-top: 3vh;
    color: #fff;
    font-size: 14px;
}


.box5_nr_right {
    float: right;
    width: 60%;
    height: 110vh;
}