DedeV6/src/templets/default/widget_recommend.htm

<div class="card ddcard pt-3">
    <div class="card-header">
        <div class="row">
            <div class="col-12 caption"><span>推荐内容</span></div>
        </div>
    </div>
    <ul class="list-group list-group-flush">
        {dede:arclist flag='c' titlelen=42 row=10}
        <li><a href="[field:arcurl/]" title="[field:fulltitle/]">[field:title/]</a></li>
        {/dede:arclist}
    </ul>
</div>
<!-- /.ddcard -->