Use consistency in:
The use colors consistently throughout the web site.
Location and order of navigation.
The number of fonts and use the same fonts, font styles and font sizes throughout the web site.
Apply restrictions to:
The width of copy blocks.
The height of copy blocks.
The size and number of graphics and images.
The number of clicks to reach any given page.
The number of colors used on the site.
The number of fonts and font styles used throughout the site.
The number of times an animation loops.
The number of screens to scroll through a page.
The use of table borders.
An off switch for audio.
A non-Flash version of Flashed sites.
Instant visibility of the most important links and information.
Meaningful text labels for all links and images.
The file size for downloads or large graphics.
Sufficient contrast between background and text.
Meaningful and well-organized content.
Provide intuitive navigation.
Thorough compatibility testing for:
Never underline body text, as a reader will think it’s a link.
Avoid using bold within the body of the text for the same reason.
Underline text – it will be confused with links.
Force visitors into using the back button on their browser.
Rely on mouseovers to label links.
Place text on top of busy backgrounds.