The page requires the use of Cascading Style Sheets (CSS). Make sure the page can be understood and navigated without applying style specifications.

Make sure the document can be read without style sheets.

Cascading Style Sheets (CSS) is a great technology for separating content and its structure from presentation. Usually when content is organized logically, it will be rendered in a meaningful order when style sheets are turned off or not supported. However, there may be situations where CSS gets in the way, limiting accessibility to a web page.

For example, old browsers do not support CSS, and thus page authors should not rely on styles to convey information or enable navigation. Also, user-defined style information (such as font size, font color) should be unaffected by styles specified in the page.