.m-f4b{
    display: none;
}
/* 内容 */
.index_js_icon{
    width: 30px;
    height: 43px;
}
.zsjm_ys{
    width: 570px;
    height: 348px;
}
@media (max-width:769px) {
    .w,.nr_wt{
        width: 100%;
    }
    img{
        max-width: 100%;
    }
    .index_js_icon {
        width: 18.5px;
        height: 23px;
    }
    .title_min_size{
        font-size: 23px;
    }
    .min_padding_leftRight16{
        padding: 0px 16px;
    }
    .min_margin_top40{
        margin-top: 40px;
    }
    .min_margin_top64{
        margin-top: 64px;
    }
    .min_margin_top30{
        margin-top: 30px;
    }
    .min_margin_top20{
        margin-top: 20px;
    }
    .min_padding_bottom40{
        padding-bottom: 40px;
    }
    .min_display_block{
        display: block;
    }
    .margin_left0{
        margin-left: 0px;
    }
    .zsjm_ys{
        width: 100%;
        height: auto;
    }
}