Involves information architecture, page layout, and conceptual design of a website

Website design involves the information architecture (navigation schemes and naming conventions), the layout and pages (wireframes or page schematics are created to show consistent placement of items), and the conceptual design (i.e branding, graphics and/ or UI).

Questions having the tag regard the design of a website in the context of user experience. For example, site-map, user flow, usability, navigation, or other information structure would fall under this tag.

Reference: http://en.wikipedia.org/wiki/Webdesign#Overview