Improved the look of Definition Lists, but I think we're gonna
need a couple of flags on the macro to supply different base
classes, because I don't think I really like using the CODE style
with its yellow background, at least not the one in the default
template, and because I think we're gonna need a distinction between
a "tight" list (where the dt & dd share a line) and a standard
list (where they don't.)
Added a mono font for code
Added CSS for code
Added a better reset/normalize
Added my 1.25 scaled header text styling.
Added the home-page 'topic-card' styling.
Elf M. Sternberg