Courier New, Courier, Mono, -4.
Georgia, Times New Roman, Times, serif, -3.
Veranda, Arial, Helvetica, sans-serif,-2.
Geneva, Arial, Helvetica, san-serif,-1.
Default font rendered in "lime" with no sizing. The default font size is 3. Once 4 is reached in either direction (positive or negative), no further changes in sizing occur. Additionally, the font faces represented here are the most likely candidates to be available on all user's systems.
Arial, Helvetica, sans-serif, +1.
Times New Roman, Times, serif, +2.
Courier New, Courier, mono, +3.
Georgia, Times New Roman, Times, serif, +4.