Portable Design - website design must be portable and accessible.
Design for Low Bandwidth - not all user who are online are connected to a high-speed internet connection.
Direction - identify the order of importance of the various elements and place them in a sequence where the eye moves and perceives the things it sees.
Simplicity - the more option you place in your site, the more difficult it is for a visitor to make a decision and more time is required to browse through them.
Regular testing - every device or project needs maintenance, same as your website.
