CSS stands for Cascading Style Sheets. It is a style sheet language used to describe the presentation and styling of documents written in markup languages such as HTML or XML

. CSS allows web developers to separate content (HTML) from presentation (style), enabling control over layout, colors, fonts, and other visual aspects of web pages. This separation improves accessibility, flexibility, and efficiency by allowing multiple pages to share the same styling rules through external CSS files

. In summary, CSS is essential for defining how web content looks and is displayed across different devices and media