.about_content {
    width: 1200px;
    box-sizing: border-box;
    margin: 0 auto;
    background-color: #fff;
    padding: 108px 0 180px 0;
    /* border: 1px solid red; */
}

/* 公司介绍分类 */
.unitNav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom:1px solid #70707078;
    margin-bottom: 60px;
    padding: 0 110px;
}
.unitNav>div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;

    font-size: 24px;
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: 400;
    color: #B9B9B9;
}
.unitNav>div:hover {
    cursor: pointer;
}
/* 分类选中底部边框 */
.unitNav_active::after {
    position: relative;
    bottom: -10px;
    content: '';
    display: block;
    width: 90px;
    height: 4px;
    background: #7FC3E8;
}
/* 分类选中字体颜色 */
.unitNav_color {
    color: #262626 !important;
}

.unitNav_item {
    padding: 0 110px;
    /* border: 1px solid red; */
}



@media screen and (max-width:1200px){
    ._swiper_img {
        height: 450px;
    }
    .unitNav>div {
        font-size: 22px;
    }
    .about_content {
        width: 100%;
        
    }
}


@media screen and (max-width:850px){
    ._swiper_img {
        height: 300px;
    }
    .unitNav>div {
        font-size: 16px;
   
    }

    .unitNav_item {
        font-size: 12px;
    }
}


@media screen and (max-width:668px){
    .unitNav>div {
        font-size: 12px;
    }
    .unitNav {
        padding: 0 20px;
    }

    .unitNav_active::after {
        width: 50px;

    }

}