The highest level is Level AAA, which sets really high requirements to both website creators and operators. Typically, level AA is recommended, especially for public interest, state, and municipality websites. Level AA means a higher-level availability and accessibility. Level A is the basic, which has to be fulfilled by any accessible website. The WCAG standard defines three levels of accessibility.

The guide has been evolving over the years and the current version in 2020 is WCAG 2.1. WCAG cover a wide range of recommendations to make web content accessible to people with disabilities, including blindness and low vision, deafness and hearing loss, learning disabilities, cognitive limitations, limited movement, speech disabilities, photosensitivity, and combinations of these.ДЇollowing WCAG will also result in web content becoming more usable to users in general. This is why the World Wide Web Consortium (W3C), the main international standardization organization on the Internet, has created the Web Content Accessibility Guidelines (WCAG). It is important that people with disabilities are not excluded from the World Wide Web. People use it for communication, getting information about worldwide news and events, moreover, they also use it to deal with their banking and other official affairs.

Nowadays, the Internet has become an integral part of people's everyday life.

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