fix: center banners on mobile

resources/views/layouts/master.blade.php

@@ -89,7 +89,7 @@
     </div>
 
     @if(!isset($disableBanners) || !$disableBanners)
-        <div class="mobile-banner-fullwidth d-flex d-md-none">
+        <div class="mobile-banner-fullwidth d-flex d-md-none justify-content-center mt-4">
             <ins data-revive-zoneid="6" data-revive-id="{{ env('REVIVE_ID') }}"></ins>
         </div>
     @endif