there should be more padding below the header sub-resource module and Wiki resource content

I think this is too tight by default when the wiki resource is viewed as a sub-resource.

See for example

http://www.curriki.org/xwiki/bin/view/Coll_jkl1231/2009SampleCollection?bc=;Coll_jkl1231.2009SampleCollection

Also see the screenshot.

Chrissie and Jim should define any spec for the Style guide and link to that here, then assign to David.