Cascading Style Sheets (CSS) is a style sheet language used for describing the look and formatting of a document written in a markup language. While most often used to style web pages and interfaces written in HTML and XHTML, the language can be applied to any kind of XML document, including plain XML, SVG and XUL.
CSS is designed primarily to enable the separation of document content from document presentation, including elements such as the layout, colors, and fonts. It is the latest standard in the CSS series. CSS3 offers a wide variety of new trends to make an impact with your web designs. With many exciting new functions and features, CSS can be used as a powerful tool in website designing and development. A CSS3 refers to the technical stipulation of a layout. It ensures that a web page will appear precisely the way the website developer has specified.