CSS is used to format the layout and define visual styles of web pages. AJAX allows for asynchronous updating of web pages by combining technologies like JavaScript, XML, CSS, and DOM to process user requests immediately. JavaScript is a programming language that runs in web browsers to make pages more interactive. Frameworks provide pre-built design structures to divide web pages into independent parts, while APIs provide standardized access to operating system resources for application development. Layout and templates determine the placement and structure of text, images, and other design elements on a page.

2. CSS used to define text styles, table sizes, and other aspects of Web pages

3. CSS used to describe the presentation semantics document written in a markup language

5. Ajax combines several programming tools including JS, dynamic HTML DHTML, XML, CSS, DOM and the Microsoft object, XMLHttpRequest

7. This is a programming language that runs on a client's browser which makes a page more interactive

9. Frames for the use of multiple Web pages on a single display screen

11. All OS provide a way for applications to use their system resources by using an API

14. A set of predesigned formats for text and graphics on which new pages and webs can be based