FIX Forbid background color on title

resources/css/pages/article-exemple.css

@@ -8,7 +8,7 @@
   }
 
   .variation-examples-on-uppercased-titles {
-    @apply py-6;
+    @apply flex flex-col gap-y-6 items-start py-6;
     h2,
     h3,
     h4 {

theme.json

@@ -124,6 +124,13 @@
           "size": "1.875rem"
         }
       ]
+    },
+    "blocks": {
+      "core/heading": {
+        "color": {
+          "background": false
+        }
+      }
     }
   }
 }