.index_banner .layui-nav .layui-this::after{
    width: 138px;
}
.content{
    background-color: #fff;
    margin: 0;
}
.content::before{
    content: '';
    display: table;
}
.content .plate{
    display: flex;
    justify-content: space-between;
    padding: 100px 0 120px;
}
.content .col_1{
    border-top: 0;
    padding: 0;
}
.content .col_1 .header{
    border: 0;
}
.content .col_1 h1{
    text-align: left;
    font-size: 32px;
    font-family: PingFangSC-Medium, PingFang SC;
    font-weight: 500;
    color: #333333;
}
.content .col_1 .art_desc{
    font-size: 16px;
    font-family: SourceHanSansCN-Regular, SourceHanSansCN;
    font-weight: 400;
    color: #999999;
    margin: 30px 0 36px ;
    text-align: left;
}
.content .col_1 .art_desc .time{
    margin-left: 0;
    margin-right: 50px;
}

.content .col_2 .col2_item{
    padding: 0;
}

@media (max-width: 768px) {
    .index_banner .layui-nav .layui-this::after{
        width: 94px;
        height: 2px;
    }
    .content .plate{
        flex-direction: column;
        padding-top: 40px;
        padding-bottom: 30px;
    }
    .content .col_1{
        margin-bottom: 20px;
    }
    .content .col_1 .header h1{
        font-size: 18px;
        text-align: center;
    }
    .content .col_1 .art_desc{
        font-size: 12px;
        text-align: center;
        margin: 15px 0 20px;
    }
    .content .col_1 .art_desc .time{
        margin-right: 15px;
    }
}