Accessibility and Disability
W3C is the world wide internet consortium which looks at the technologies used to build a website correctly. It is now internationally recognised that a website should be able to be read by specialist browsers that are used by the partially sighted. In November 2005 Google reduced the rating of websites that were not W3C compliant. This is one reason why achieving a pass in this area is extremely important. However, accessibility is not simply restricted to considering people with partial/no vision, and other disabilities such as dyslexia, dexterity using a mouse, and colour blindness should be considered too. Sites also, therefore, need to take account of a number of more subtle considerations e.g. adequate colour contrast levels, correct colour schemes, provision of alternative descriptions for images etc.
(Cascading Style Sheets)
From an accessibility point of view CSS is much better than the
previous method of laying out a site using hidden tables and
cells to ensure that elements lined up and stayed in the
correct place.The problem is that screen readers (used by visually
impaired people) cannot always make any sense of tables and
cells when used to layout a web page, whereas they can when
CSS is used correctly.
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