adm_themes/simple/templates/system/message_modal.tpl
<div class="modal-header">
<h3 class="modal-title">{$messageHeadline}</h3>
<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
</div>
<div class="modal-body">{$message}</div>
<div class="modal-footer">
{if $url != ''}
{if $showYesNoButtons}
<button id="admButtonYes" class="btn btn-primary" type="button" onclick="{$url}">
<i class="bi bi-check-circle-fill"></i>
{$l10n->get("SYS_YES")}
</button>
<button id="admButtonNo" class="btn btn-secondary" type="button" data-bs-dismiss="modal">
<i class="bi bi-dash-circle-fill"></i>
{$l10n->get("SYS_NO")}
</button>
{else}
{* when forwarding, always display a next button *}
<button class="btn btn-primary admidio-margin-bottom" onclick="{$url}">{$l10n->get("SYS_NEXT")}
<i class="bi bi-arrow-right-circle-fill"></i>
</button>
{/if}
<div id="status-message" class="mt-4 w-100"></div>
{/if}
</div>