Web Accessibility services and resources for producing web sites accessible to people with special needs.

How-To Techniques

A compendioum of external articles on coding techniques useful for creating accessible websites.

Relative Fonts

The trouble with using ems for font sizing: Good overview of the problem, some general solutions.
Using relative font sizes - Dive Into Accessibility: Issues and CSS hacks for relative (or rescalable) fonts. A direct link to the chapter on Relative Fonts.
Relative Font Sizing: Example of CSS hack to standardize the font sizes across browsers.
A List Apart SIZE MATTERS Making CSS Keywords Work: Issues and CSS hacks for using keywords for relative fonts.

An accessible method of hiding HTML content: WebAIM: Adding accessible, invisible text that is read by screenreaders
Aural Text Class: A similar technique for accessible, invisible text