theme: Keyboard
Navigation and operation using only a keyboard.
1.4.13 Content on Hover or Focus
Tooltips can be dismissed, usually via the esc key, the text in the tooltip can be selected, and they don’t time out on their own.
2.1.1 Keyboard
Can you get around using the keyboard alone.
2.1.2 No Keyboard Trap
There shouldn’t be a situation where you enter a modal with the keyboard and can’t get back to where you were.
2.1.3 Keyboard (No Exception)
You can navigate and interact with a page using the keyboard alone.
2.1.4 Character Key Shortcuts
Keyboard shortcuts should use modifier keys, like ctrl, command, or alt/option.
2.4.1 Bypass Blocks
‘Skip links’ are available for keyboard users to jump past navigation.
2.4.11 Focus Not Obscured (Minimum)
The keyboard focus is not completely hidden by other content.
2.4.12 Focus Not Obscured (Enhanced)
The keyboard focus is fully visible at all times.
2.4.13 Focus Appearance
Focus indicators are at least 2px thick and have a 3:1 contrast ratio against adjacent colors.
2.4.3 Focus Order
When a keyboard user tabs through a page, the order goes from top to bottom and left to right, as you would read the page.
