Over time, it became easy to create new pages that were already accessible without the need for retrofitting. Many of these involve visual design, such as redundant identification of sections by text, color, and shape of icons. The use of tables for layout involves an intersection between visual design and technical design. The layout of pages is such that non-presentation of a table, as in Lynx, or inability of access aids such as screen readers to detect table structure and present text accordingly, does not create an access barrier. The CAST web site accomplishes this in part through the use of ALT-text behind images and links in image maps.
Sounds have descriptions or transcripts, and videos are both described and captioned.
Flexibility of content is important to universal design of content, as it maximizes the ability of software on a client to present information in a user's preferred way. This is accomplished on the CAST site by appropriate use of HTML structural elements, such as headings that can be converted into a dynamic outline on the client. Structure can also be added to the page by dividing it into sections through use of the new DIV element - CAST's pages are divided into header, navigation, body, and footer sections. HTML 4.0 provides the potential for a number of user interface enhancements, some of which are already implemented by some browsers. CAST has incorporated these into its site as well.