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Colour contrast

A high colour contrast ratio between a text and its background makes said text easier to read for colour blind and partially sighted users.

Aria-label and aria-labelledby

These attributes are used to give an element it's accessible name. They do the same thing but in different ways.

Why does an accessible internet matter?

There are humane, technical, financial, and legal arguments in favour of building accessible websites and applications.

Video

Videos are a useful tool to convey information. How do you make sure they are accessible to everyone?

Visible focus

When navigating from link to link by tab key, a user must always be able to see which element receives focus. Define a clearly visible :focus state in your style sheet to achieve this.

Aria-expanded

Components often hide or show content. Some examples: An FAQ, where each question is a button that expands or collapses the answer. A hamburger menu in a mobiel viewport, it…