To understand Web design, you first need to understand the basic relationship between clients and servers on the World Wide Web. The client-server relationship is the yin and yang that keeps the Internet running. A server is any computer that contains and distributes information. A client is the program that requests and processes or displays that information. Web servers store and serve Web pages, and Web clients (more often referred to as Web browsers) display the pages on your screen. Clients and servers are useless without each other, much like separate halves of a piece of Velcro.