Mpdf PHP Bullet删除

Question

我要删除默认的bullet li标签、、、、、

''' ul {

        list-style-type: none;
    }
    ul > li:before {
        content: "" !important;
        background: url(assets/images/level-1.png) no-repeat !important;
        position: absolute !important;
        margin: 2px 0px 0px -18px;
        /* top: 8px !important; */
        width: 15px !important;
        height: 12px !important;
    }

    ul > li > ul > li > ul > li::before {
       
        content: "" !important;
        background: url(assets/images/level-3.png) no-repeat !important;
        position: absolute !important;
        margin: 2px 0px 0px -18px;
        /* top: 8px !important; */
        width: 15px !important;
        height: 12px !important;
            }

    ul > li > ul > li::before {
        content: "" !important;
        background: url(assets/images/level-2.png) no-repeat !important;
        position: absolute !important;
        margin: 2px 0px 0px -18px;
        /* top: 8px !important; */
        width: 15px !important;
        height: 12px !important;
    }

'''

但不能删除..... Plz帮助删除mpdf codeignator项目defalut项目符号删除:: marker