• A style sheet language for describing the presentation of documents written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML, or XHTML). CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript. It is designed to enable the separation of content and presentation, including layout, colors, and fonts. This separation can improve content accessibility, provide more flexibility and control in the specification of presentation characteristics, reduce repetition and complexity by allowing web pages to share formatting (by referring to the relevant CSS in a separate file, i.e., a style sheet), and improve page load speed between pages that share such CSS files and the respective formatting (by enabling these files to be cached). The first final specification of CSS was published in 1996 by Håkon Wium Lie and Bert Bos. ← Wikipedia ↑ w3.org/Style/CSS

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