Tests of WebKit's intepretation of font sizes when no absolute font size is specified. Percentages and logical keywords scale
to reflect the family type. Opera 9 matches this behavior as well (except it has a bug with multiple font-family mappings
as in the first example).
Should be 13 px
Should be 13px
Should be 13px
Should be 13px
Should be 16px
Should be 16px
Should be 19px