Place active elements in a predictable tabbing order
Make sure the tabbing order for active elements follows a logical and predictable sequence
Users who cannot use a pointing device such as a mouse to navigate through content have to rely on alternative means. Navigating with the keyboard can be just as efficient, as long as the tabbing order through content can be reliably predicted and that every active element included in a page can indeed be reached in an sequential order that makes sense.
To do so, simply make sure active elements such as links and form controls receive focus [...]