Cascading Style Sheets (CSS) is a style sheet language used for describing the visual presentation of @HyperText Markup Language (HTML) and XML documents. CSS defines how elements should be rendered on screen, on paper, in speech, or on other media, enabling developers to separate content structure from design. Introduced by the World Wide Web Consortium (W3C) in 1996, CSS has evolved through multiple levels, with CSS3 introducing modular specifications for improved flexibility. It supports features such as layout control, typography, color management, and responsive design through media queries. CSS rules are applied through selectors that target HTML elements, with styles cascading according to specificity, importance, and source order. This cascade mechanism allows authors to override browser defaults and user styles while maintaining predictable rendering. The language also supports animations, transitions, and custom properties (variables), expanding its capabilities beyond static styling. Modern development practices integrate CSS with frameworks, preprocessors like Sass or Less, and component-based systems to enhance maintainability and scalability in web design. In 2014, when starting @My Social Sherpa, I spent six hours making small changes to my CSS in an attempt to resolve a small issue in how my content was displaying only to see the intended change and yell like Neo, "I know CSS!"

Contexts

*