Links (<a> elements) are focusable by default, so it should normally be possible to activate them using the keyboard. However, under certain circumstances, they are not focusable: Unless you are deliberately trying to "disable" a link, make sure it does not take the form of any of these examples.

When positioning elements using CSS, it's possible to place them in a position that does not reflect their location in the source order. This can have unexpected side effects for keyboard-navigation users.