Accessibility means building pages that people with disabilities can use: people who are blind or have low vision, people who cannot use a mouse, people who are deaf, and people with cognitive differences. Employers in Ghana and abroad list it in adverts, and good accessibility also helps everyone reading on a small screen in bright sun.
The standard: WCAG
The Web Content Accessibility Guidelines (WCAG), published by the W3C, are the international standard. They are organised around four ideas: content must be perceivable, operable, understandable and robust. You do not need to memorise it all; start with the checks below.
Five checks that catch most problems
1. Semantic HTML. Use real button, a, label, headings and lists. This gives keyboard and screen reader support for free.
2. Keyboard use. Press Tab through the page. Every link, button and field should be reachable, in a sensible order, with a visible focus outline. Never remove the outline without replacing it: