WCAG 2.0 is a set of guidelines created by the W3C-WAI working group. They have created a set of rules to assist web developers, designers, and content authors create accessible websites. The guidelines are grouped into 4 main categories, known as Principles. They are as follows:
- Perceivable
- Operable
- Understandable
- Robust
Principle #1: Perceivable
Principle #2: Operable
Principle #3: Understandable
Principle #4: Robust