If you use tables to structure page layout, provide some information in the attributes or table captions, indicating that the table is not a data table. In Netscape 4.0, you can turn off animations any time the browser loads a new page by choosing Stop Animations from the View menu. Use titles in each frame so that users can keep track of frames by title. Cascading style sheets permit great design flexibility, improve site accessibility by separating page content from layout, and ease the burden of site management. Style-sheet language is similar to HTML code, but using CSS in conjunction with HTML means that the work of document structure and layout presentation falls to the style sheet, not the markup language.
Designers control font size, spacing, background color, and text and image placement.
At each organizational level of a site, authors and designers can incorporate only the new hierarchical elements needed because the parent attributes are automatically imported to the style sheet. This organized structure enables access technologies to present Web pages logically to vision-impaired users. Testing is an integral part of site development and design. For sight-impaired users, special browsers and screen readers function most effectively when the underlying HTML code is uncluttered and contains no errors. These automated services check for accessibility, alert you to possible coding errors, and, in some cases, suggest fixes or even fix the problem for you.