Ticket #63073: 63073.patch

wp-content/themes/twentytwelve/css/blocks.css

@@ -26 +26 @@
         font-size: 0.857142857rem;
         line-height: 2;
         font-style: italic;
-        text-align: left;
+        text-align: center;
 }
 
 [class^="wp-block-"].alignleft,