Add Header (h1>h6) tags to layout htmlTags Allowed types

Author: furan917

lib/internal/Magento/Framework/View/Layout/Generator/Container.php

@@ -39,6 +39,12 @@ class Container implements Layout\GeneratorInterface
         'table',
         'tfoot',
         'ul',
+        'h1',
+        'h2',
+        'h3',
+        'h4',
+        'h5',
+        'h6',
     ];
 
     /**

lib/internal/Magento/Framework/View/Layout/etc/elements.xsd

@@ -140,6 +140,12 @@
             <xs:enumeration value="table"/>
             <xs:enumeration value="tfoot"/>
             <xs:enumeration value="ul"/>
+            <xs:enumeration value="h1"/>
+            <xs:enumeration value="h2"/>
+            <xs:enumeration value="h3"/>
+            <xs:enumeration value="h4"/>
+            <xs:enumeration value="h5"/>
+            <xs:enumeration value="h6"/>
         </xs:restriction>
     </xs:simpleType>