data-clipboard-target="#comment p" will only copy the first content of <p></p> of <div #comment></div>, how can I copy all <p> of the <div>?

[fofen]

<div id="comment-2">
  <p>The first.</p>
  <p>The second.</p>
  <p>The third.</p>
</div>
<button class="copy-btn" data-clipboard-target="#comment-2 p">Copy</button>

<div id="comment-3">
  <p>The first.</p>
  <p>The second.</p>
  <p>The third.</p>
</div>
<button class="copy-btn" data-clipboard-target="#comment-3 p">Copy</button>

<script>
  var btns = document.querySelectorAll('.copy-btn');
  var clipboard = new ClipboardJS(btns);
</script>

How to copy all

of #comment-2, please?