Tabs

A row of tabs. By default it is a tablist: one tab in the page's tab order, the arrow keys of its orientation moving between tabs, Enter or Space selecting.

Keyboard

KeyDoes
Right / Left (horizontal), Down / Up (vertical)The next / previous enabled tab, coming round at the ends. Left and Right swap right to left.
Home / EndThe first / last enabled tab
Enter / SpaceSelects the focused tab
TabLeaves the tabs - into endContent, or the panel

A navigation (as="nav") keeps every tab in the page's tab order instead, as links are.