* Do not wrap footnotes or citations to make them responsive
* Remove margin below footnotes and citations, add margin-top to next element
* Remove margin-bottom from responsive citation and footnote wrapper
* Mark responsive wrapper if used for citation or footnote
* Document workaround for footnote and citation spacing
* Add vertical space if citation/footnote is last element in parent
This keeps correct vertical whitespace if the citation or footnote is the last element in a section.
The style rule directly above this line did not match since there is direct sibling.
* Clarify
Fixes#488