Dexterity
Many people have dexterity challenges that make the use of a mouse or touch screen difficult or impossible. This includes people with neurological problems; people with conditions such as muscular dystrophy, cerebral palsy, multiple sclerosis, Parkinson's disease or ALS; and people with spinal cord injuries. Some people may use alternate methods of navigating content on a website, either through keyboard navigation or by voice control.
Keyboard navigation: Website creators should make sure that all content on their website can be accessed by alternate methods—e.g., content is not skipped over when navigating using the tab key on the keyboard.
Keyboard focus, which provides visual cues to show what element is active, helps people using keyboard or voice navigation see where they are on the page.
Proper use of headers and good menu organization helps people navigate quickly and efficiently to the parts of the website they want to see.