s=&quot;list-group-item list-group-item-action&quot; href=&quot;#item-2&quot;&gt;Item 2&lt;/a&gt;
        &lt;a class=&quot;list-group-item list-group-item-action&quot; href=&quot;#item-3&quot;&gt;Item 3&lt;/a&gt;
        &lt;ul class=&quot;nav nav-underline flex-column border-start ms-2 my-2&quot; style=&quot;gap: .25rem;&quot;&gt;
          &lt;li class=&quot;nav-item&quot;&gt;
            &lt;a class=&quot;nav-link fw-normal&quot; href=&quot;#item-3-1&quot;&gt;Item 3-1&lt;/a&gt;
          &lt;/li&gt;
   