zulip/web/templates/copy_invite_link.hbs

<a class="btn copy_button_base" data-tippy-content="{{t 'Copy link' }}" data-tippy-placement="top" aria-label="{{t 'Copy link' }}"
  id='copy_generated_invite_link' data-clipboard-text="{{ invite_link }}">
    {{> copy_to_clipboard_svg }}
</a>

<div id="copy_generated_link_container">
    <span>{{t "Link:" }}</span>
    <a href="{{ invite_link }}" id="multiuse_invite_link">{{ invite_link }}</a>
</div>