Chunk4x:Help screen column header Header Class From Joomla! Documentation Revision as of 02:02, 4 September 2018 by Tom Hutchison (talk | contribs) (1 revision imported: populate Chunk4x namespace temp)(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff) Header Class. Here you can add optional CSS classes to add to the modules header or title element.