Aim For Simplicity
the Web can handle animation, sound, and video, Web designers are tempted
to use as many of these media as they can. Although these media can often
be useful--for instance, animation can be used to show some technical
processes better than text alone can--often the media only slow the download
and annoy readers. If effects serve no useful function, it is best to
Use simple backgrounds, or none at all. Busy backgrounds distract your readers from the information you want to communicate.
A simple background
About as busy as you want to get
What to avoid
The most legible pattern uses black text against a white background. Add a tint to the background, but don't choose a background color that hurts legibility.
contrast between text and the background
The black letters contrast well against the light background.
The letters do not contrast well against the dark background. Readers will find it tiring to read this text.
Avoid decorative graphics, such as most clipart. You don't want your readers to have to wait for a meaningless graphic to load. Instead of using large graphics, use thumbnail graphics.
A waste of time
The letters are too big, and the graphic of the horizon provides no useful information.