.about_div{
    background-color:#f3f5fb;
    padding-bottom: 10px;
    margin-top: 0px;
    width: 100%;
    padding: 10px 0;
    min-height: 450px;
}


.about_main{
    width: 1200px;
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
}
.about_main .about_title{
    line-height: 50px;
    height: 50px;
    font-size: 20px;
    /*color: #ef3340;*/
}
.about_left{
    width:100%;
    height: 398px;
}
.about_img img{
    width: 100%;
}
.about_right{
    width:100%;
    padding-left: 3%;
}

.about_item_title{
    padding:10px 20px;
    background-color: #fff;
    float: left;
    width: 42.5%;
    height: 175px;
    overflow: hidden;
    box-shadow: 0 2px 14px #9697b480;
    border-radius: 3px;
    background: url('/resources/img/home1/bj02.png');
    background-size: cover;
    background-repeat: no-repeat;
}
.about_div_title{
    text-align: center;
    color: #ef3340;
    font-size: 20px;
    margin-bottom: 2px;
}
.about_div_desc{
    line-height: 17px;
    text-align: justify;
}
.row_div{
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}
.videol_div{
    width: 100%;
    max-height: 100%;
}
.video1_img{
    height: 398px;
}

@media (max-width:1200px) and (min-width: 175px){
    .about_main {
        display: block;
    }
    .about_left {
        width: 100%;
        height: 298px;
        overflow: hidden;
    }
    .about_right {
        width: 100%;
        padding-left: 0%;
    }
    .about_item_title {
        height: auto;
    }
    .about_main .about_title {
        line-height: 25px;
        padding-bottom: 5px;
        height: auto;
        font-size: 16px;
        padding-top: 10px;
    }
    .about_div_desc {
        padding-left: 10px;
    }
    .video1_img {
        height: 237px;
    }
}