Web design is the designing and graphical presentation of content shown on the Internet in the form of Web sites and other Web applications using many different forms of media. The basic design of most pages on the Web use HTML, CSS, and the newest form of language, XHTML. Many sites today also integrate various forms of dynamic, interactive content using E-Commerce, and server-side languages such as PHP (Hypertext Preprocessor), and ASP. Web design contrasts with Web development, which includes Web server configuration, writing Web applications, and server security.