CSS stands for Cascading Style Sheets. It is a markup language used for styling web pages, allowing web developers to control the layout and appearance of HTML documents. CSS provides a way to separate the presentation layer from the content layer in web development, making it easier to create and maintain consistent styles across multiple web pages.
CSS uses a series of rules and selectors to target HTML elements and apply styles to them. A CSS rule typically consists of a selector, followed by a set of properties and values enclosed in curly braces. The selector specifies which HTML elements the styles should be applied to, and the properties and values define how those elements should be styled.