Card 2: Parts
Cards are made of parts
The title and text areas are fields. The controls at the bottom are buttons. The panel below is a widget. In Edit mode, select any part to inspect its name, position, size, style, and script.
These parts sit on a background, so they appear on every card that uses it. Their text can still be different on each card.
Try it: open Edit mode and move this field a few pixels.