Openness
Why?
The open web is a place where innovation and creativity grow. It allows for collaboration between people who would otherwise be unable to connect.
How?
Openness is achieved through public access to information and ideas. Open-source software also helps achieve openness on the internet when people are able to use code others have made.
Accessibility
Why?
Accessibility is important because it ensures that everyone can have access to the information they need. This promotes equality and leads to a more informed society.
How?
Accessibility is achieved through inclusive design choices. Some design choices include the use of heading and subheadings, image descriptions and descriptive link text. W3C Designing for Web Accessibility.