._list_numbering {
        margin-left: 1em;
    }
     
    ._list_numbering li {
        list-style-type: none;
        counter-increment: cnt;
    }
     
    ._list_numbering li::before {
        content: counter(cnt) "） ";
        display:inline-block;
        margin-left:-2em;
        width: 2em;
    }