Model and Cards Properties (top)

Model

the model whose display properties you want to customize (click the plus to add a new model, and the next icon to edit the current model)

Card

the card model whose display properties you want to customize. Note that if you have two cards in your deck (such as front to back and back to front, you need to customize the properties separately)

To customize the background colour, go to Preferences instead.

Field properties (bottom)

First, select the field you want to customize. Then modify the options below.

The top section controls the font for both reviewing and for editing. The bottom section allows you to override the font when adding cards and editing.

If you click 'show preview', a preview of your cards will be displayed on the right. Note that if you're editing properties for the current card, the main window is updated in real time as you edit. Thus, the preview window is only useful if you're editing display properties for something other than the current card.