resources/templates/comp/modal_vanity.twig
<div class="modal fade" id="modalVanity" tabindex="-1" role="dialog" aria-hidden="true">
<div class="modal-dialog modal-sm">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">{{ lang('vanity_url') }}</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<input type="text" class="form-control" id="modalVanity-input" maxlength="64">
</div>
<div class="modal-footer">
<button class="btn btn-primary media-vanity" id="modalVanity-link"><i class="fas fa-check fa-fw"></i> {{ lang('confirm') }}</button>
<button type="button" class="btn btn-secondary" data-dismiss="modal">{{ lang('no') }}</button>
</div>
</div>
</div>
</div>