Cascading Stylesheets (CSS)

Cascading Style Sheets (CSS) is a style sheet language used for designing and shaping the presentation of documents written in a markup language, most notably HTML. It describes the look and formatting of a document written in a markup language, including such features as the layout, fonts, colors, and even interactive elements. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.

CSS is a declarative language used to style elements on a webpage. It is used to determine how HTML elements should be displayed, including the size, color, font, and layout of elements. A style sheet can be used to apply a consistent look across multiple web pages, allowing developers to control the presentation of their webpages with a few lines of code.

The most recent version of CSS is CSS3, released in 2011. CSS3 introduced a number of new features, including the ability to use custom fonts, build animations, and control 3-dimensional elements. The current version of CSS also has a number of new features such as support for media queries, allowing developers to build responsive designs that are suitable for different device widths, and support for fundamental programming concepts such as variables.

CSS has become increasingly popular since its release, and is now supported in most modern web browsers as well as a number of mobile operating systems. It has also become an essential tool of web developers and designers, allowing them to create visually appealing websites quickly and easily.