Add styling for thumb cards.
Add styling for thumb cards.

They got left out of original round
of styling. This adds them in, using
the same fonts we have used for the
other cards.

https://phabricator.endlessm.com/T10536

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib