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CSS specifies presentation and styling for HTML/XML documents, supporting both visual and some non-visual formatting.
Cascading Style Sheets (CSS) is a style sheet language used to define the presentation and styling of web documents written in markup languages such as HTML or XML (including SVG and MathML). As a cornerstone of the Web alongside HTML and JavaScript, CSS enables authors to separate content from presentation—covering layout, colors, fonts, and other visual (and some non-visual) formatting—so the same underlying markup can be styled in different ways for different contexts like screen, print, or assistive technologies. CSS works by applying style rules to elements in the document using selectors, which match tags and attributes. Rules are organized into style sheets and include declaration blocks that specify properties and values. The “cascading” aspect determines which declaration takes effect when multiple rules match an element, using a predictable priority scheme. CSS also supports reuse and efficiency by allowing multiple pages to share the same external .css file, which can be cached to improve load speed.
CSS specifies presentation and styling for HTML/XML documents, supporting both visual and some non-visual formatting.
CSS promotes separation of content and presentation, improving accessibility, maintainability, and consistency across pages.
CSS uses selectors and declaration blocks; the cascade priority scheme decides which matching rule applies.
CSS styles can be reused via external style sheets, reducing repetition and enabling caching for faster page loads.
A style sheet language used to define the presentation and styling of web documents written in markup languages like HTML or XML.
A collection of CSS rules that define how elements in a document should be presented.
A pattern in CSS that matches elements in the markup to which styles will be applied.
A set of one or more declarations enclosed in braces that specifies property-value pairs for matched elements.
A single CSS statement consisting of a property, a colon, and a value.
The priority mechanism that determines which CSS declaration applies when multiple rules match the same element.
A predictable part of the cascade that helps decide which selector’s rule should win when multiple selectors match an element.
A separate .css resource linked from HTML that allows multiple pages to share the same styling and benefit from caching.
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