CSS Syntax - W3Schools
A CSS rule consists of a selector and a declaration block: The selector points to the HTML element you want to style. The declaration block contains one or more declarations separated …
At-rules - CSS | MDN
Jul 14, 2025 · At-rules are CSS statements that instruct CSS how to behave. They begin with an at-sign, @ (U+0040 COMMERCIAL AT), followed by an identifier. They include everything …
What is CSS Ruleset? - GeeksforGeeks
Jul 23, 2025 · A CSS ruleset is the foundation of how styles are applied to HTML elements on a web page. It consists of a selector and one or more declarations, which define how elements …
CSS - @ Rules - Online Tutorials Library
CSS at-rules are special instructions or statements beginning with the "@" symbol. They are used to control or modify the behavior of the stylesheet and are typically used for tasks such as …
The At-Rules of CSS - CSS-Tricks
May 12, 2015 · The at-rule is a statement that provides CSS with instructions to perform or how to behave. Each statement begins with an @ followed directly by one of several available …
CSS Syntax: Complete Guide to Rules, Selectors, Properties and …
Jun 13, 2025 · Understanding CSS syntax is crucial for any web developer looking to create professional, maintainable stylesheets. This comprehensive guide will walk you through every …
CSS At-rules Reference - W3Schools
Allows you to define custom CSS properties directly in the stylesheet without having to run any JavaScript. This at-rule has data type checking and constraining, sets default values, and …
Introduction to CSS syntax: declarations, rulesets, and statements
Oct 10, 2025 · Setting CSS properties to specific values is the core function of the CSS language. A property and value pair is called a declaration, and any CSS engine calculates which …
CSS - Wikipedia
CSS also has rules for alternative formatting if the content is accessed on a mobile device. [5] The name cascading comes from the specified priority scheme to determine which declaration …
Beginner CSS: Visual Rules Cheatsheet | Codecademy
In this CSS tutorial, you’ll learn how to add CSS to visually transform HTML into eye-catching sites. Learn the basics of web development to build your own website.