CSStiedoston

CSStiedoston is a plain text file that contains Cascading Style Sheets (CSS) used to describe the presentation of web documents. The file, typically with the .css extension, holds rules that govern layout, color, typography, and other visual aspects of HTML content. It is usually encoded in UTF-8.

A CSS file follows a syntax of selectors and declarations. Each rule consists of a selector that targets elements and a block of declarations in the form property: value; with multiple declarations separated by semicolons. Comments are written using /* ... */. The file can include at-rules such as @media for responsive design, @font-face for custom fonts, and @import for referencing other stylesheets. CSS relies on cascading, inheritance, and specificity to resolve style conflicts.

Usage: External CSS files are linked to HTML documents with a link element, e.g., <link rel="stylesheet" href="styles.css">. Styles can also be embedded in a style element or inline, though external files are preferred for separation of concerns and caching benefits. CSS files can be minified for production and can be generated by preprocessors like SASS or LESS, which compile to standard CSS.

History and status: CSS was standardized by the World Wide Web Consortium (W3C). Early versions included CSS1 (1996) and CSS2 (1998); CSS3 introduced modular specifications with ongoing development. Today, browsers support CSS3 features widely, with ongoing additions in modules such as grid, flexbox, and custom properties (CSS variables).