Many inclusive and universal design approaches are fundamentally derived from user-centred design theory.
The aim of the 7 universal design principles is to provide a practical and rigorous approach to design.
An accessible system design ensures that system functions can be accessed by users with disabilities or in extreme working circumstances.
One of the 7 principles of universal design is FLEXIBILITY IN USE which means that use of the design is easy to understand, regardless of the user’s experience, knowledge, language skills, or current concentration level.
Accessibility is about design for everyone. It is about making the information and services that you provide online available to users, irrespective of age and ability.