- Do not manually adjust text size for section headers and subheaders – use the proper heading tags instead.
- Avoid using fonts smaller than 9 points/9 pixels as they will become illegible on the Mac platform.
- Avoid specifying absolute font-sizes unless absolutely necessary; otherwise zooming may be disabled for low vision users.
- Use font faces which are more favorable for computer screens such as Verdana, Tahoma, Lucida Grande, Arial, or Georgia.
- Avoid underlined text except for links. Users unfamiliar with Web conventions may click on any underlined text.
- Avoid using italic text except for short passages or when academic convention calls for it. Italics is particularly difficult to read on a monitor; in some cases, bold face can be used in place of italics.
- Generally use dark colored fonts on light backgrounds instead of the reverse since these are more readable.
- Whenever possible, use external cascading style sheets instead of the FONT FACE tag or inline style specifications (i.e. avoid <p style="font-family: Verdana, sans-serif" >). This allows users with certain visual problems to replace your stylesheets with their own custom style sheets tailored for their needs.
- Avoid blinking text as it could trigger epileptic seizures in some users and is generally very distracting.
WCAG Guideline 2.3. — Do not design content in a way that is known to cause seizures.
WCAG Guideline 2.3.1 — Web pages do not contain anything that flashes more than three times in any one second period, or the flash is below the general flash and red flash thresholds. - Avoid entire text blocks of italic text, colored text, underlined text, decorative fonts and capitalized letters. These formatting choices can make text difficult to read.
- The use of STRONG and EM tags for B and I is generally encouraged by the standards and accessibility community.
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