Everything Interactive Needs a Keyboard Path
If you can do it with a mouse, there should be a keyboard-accessible way to do the same thing.
Try It
- Links, buttons, menus, form controls, and custom interactive widgets all need a way to complete their task without a mouse.
Quick Test
Put the mouse away. Can you still complete the task?
Read / Reference
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Understanding WCAG 2.2: 2.1.1 Keyboard
Functionality should be operable through a keyboard interface where applicable.