Card
Add Card from the + panel. It is an empty panel, styled by the board’s theme, and nothing more.
In most cases, you do not need to use this. Widgets already have their own card.
This is only useful as a backdrop for more custom layouts.
Settings
Section titled “Settings”A card has its size, and on the Scrapbook and Neon themes a colour and a decoration. See Themes.
It has no popup.