CSS, or Cascading Style Sheets, is a stylesheet language used to describe the presentation and formatting of a document written in a markup language, most commonly HTML. It allows developers to control the visual appearance of web pages, including elements such as:
1. Colors: Defining text, background, and border colors.
2. Fonts: Specifying font families, sizes, weights, and styles.
3. Layout: Arranging elements on the page, including positioning, spacing, and dimensions.
4. Typography: Controlling text alignment, line height, letter spacing, and other text-related properties.
5.Responsive design: Adapting the layout and styling of a website to different screen sizes and devices.