CSS3

CSS (Cascading Style Sheets) is a stylesheet language used to describe the presentation of a document written in HTML or XML. It enables the separation of document content from document presentation, including aspects like layout, colors, and fonts. This separation can improve content accessibility, provide more flexibility and control in the specification of presentation characteristics, and reduce complexity and repetition in the structural content. CSS is fundamental to web design, allowing for the creation of visually engaging and responsive websites. As a cornerstone of web development, CSS is essential for crafting the look and feel of web content.