Make sure there is enough contrast. People with low vision or colorblindness, or those using black and white monitors, can have difficulty reading information at sites with busy backgrounds and dark colors. It is the standardized code used to create Web sites. HTML was designed to be a universal format outside the bounds of proprietary software and computer languages. Small buttons marking links can be a difficult target to users with mobility impairments that result in restricted hand movements.
Larger buttons can make it easier for all users to select links on the page.
Notify users that you are concerned about accessibility. Encourage users to notify you with their accessibility concerns. Graphical Features People who are blind or visually impaired cannot view the graphical features of a Web site. Many people with visual impairments use screen reading programs with voice output to navigate a Web page. The ALT tag is an HTML tag that is used to give alternative text information for graphical features.