Simplicity—
do not overuse design elements as this will create visual clutter and confuse the visitor. The overuse of colour, sound and animations can be distracting. The website should be straightforward and simple.
Consistency—
layout, format and style should be the same
throughout the website unless different data types demand a change.
Navigation—
the structure of the web pages. Colouring different areas of the page, using visual symbols (icons and arrows), creating simple hyperlinks improves navigation.