html anchors point to the start of the section, but the fixed header covers the actual header
so for example, if you use the 'content' link for section 6 or 7, you 'only' see 6.1 and 7.1 because 6/7 is completely covered by the header
Suggested fix: https://stackoverflow.com/questions/4086107/fixed-page-header-overlaps-in-page-anchors
How can this be solved with our mediawiki theme though?