Accessible content must take four design principles into account:
1. Perceivable:
a. Provide text alternatives for any non-text
content so that it can be changed in to
other forms people need such as large
print, Braille, speech, symbols or simpler
language.
b. Provide synchronized alternatives for
multimedia.
c. Create content that can be presented in dif
ferent ways (for example, spoken aloud,
simpler layout, etc.) with out losing in
formation or structure.
d. Make it easier for people with disabilities
to see and hear content including
separating foreground from background.