Checkbox
WAI-ARIA supports two types of checkbox widgets: dual-state checkboxes toggle between two choices—checked and not checked—and tri-state checkboxes, which allow an additional third state known as partially checked.
— Checkbox Pattern, WAI ARIA Authoring Practices Guide (APG)
§ Notes
Missing.css uses the <input type=checkbox> element for checkboxes.
Keyboard Interaction
- Tab : Moves focus to the next item.
- Space : Changes the state of the checkbox (when focused).