xmpp.chapril.org-conversejs/src/templates/bookmark.html

<div class="available-chatroom d-flex flex-row {[ if (o.hidden) { ]} hidden {[ } ]}" data-room-jid="{{{o.jid}}}">
    <a class="open-room w-100" data-room-jid="{{{o.jid}}}" title="{{{o.open_title}}}" href="#">{{{o.name}}}</a>
    <a class="remove-bookmark fa fa-bookmark align-self-center {[ if (o.bookmarked) { ]} button-on {[ } ]}"
       data-room-jid="{{{o.jid}}}" data-bookmark-name="{{{o.name}}}"
       title="{{{o.info_remove_bookmark}}}" href="#">&nbsp;</a>
    <a class="room-info fa fa-info-circle align-self-center" data-room-jid="{{{o.jid}}}"
       title="{{{o.info_title}}}" href="#">&nbsp;</a>
</div>