Listbox is headless UI widget and does not come bundled with any CSS. This example is receiving its styles from eBay Skin.
This example is receiving its base markup and styles from eBay Skin. A subset of style properties are being customized/themed via Skin's CSS Custom Properties.
The listbox class is consumed by the following modules: listbox-button, combobox.
ARROW keys move the active descendant. SPACEBAR key is required to manually change the selected state.
ARROW keys move the active descendant and automatically updated the selected state. This behaviour is similar to a radio button group.