Includes the choice of laying out images, links and choosing proper background color along with the text color so that page is easily readable. Moreover, information organization is also considered part of the layout design.
How consistent is the navigation system throughout the weblet? How easily one can navitage from one page to another in the weblet? These are covered by the navigation. Moreover, no broken links should be there in the weblet.
This deals with how interesting is the content presentation as well as the actual merit of the content of the webpage.