Merge pull request #27661 from guardian/ei/centre-ad-slots-on-galleries

Centre gallery ad slots

Author: emma-imber

applications/app/views/fragments/gallerySlot.scala.html

@@ -12,6 +12,7 @@
         Seq("gallery-inline", "dark") ++ (if(isMobile) Some("mobile") else None),
         Map(),
         optId = if(isMobile) Some(s"$slotName--mobile") else None,
-        optClassNames = if(isMobile) Some("mobile-only") else Some("hide-until-tablet")
+        optClassNames = if(isMobile) Some("mobile-only") else Some("hide-until-tablet"),
+        useFlexContainer = true
     ){ }
 }

static/src/stylesheets/module/_adslot.scss

@@ -192,7 +192,7 @@
 .ad-slot--gallery-inline,
 .ad-slot--liveblog-inline {
     width: $mpu-original-width;
-    margin: $gs-baseline auto;
+    margin: $gs-baseline 0;
     min-width: $mpu-original-width;
     min-height: $mpu-original-height + $mpu-ad-label-height;
     text-align: center;