What is the primary purpose of using CSS in web development?

Using CSS (Cascading Style Sheets) in web development serves the primary purpose of styling and laying out web pages. CSS allows developers to control the appearance of a website, including aspects such as colors, fonts, spacing, and overall layout of elements on the page. This separation of content (HTML) from presentation (CSS) provides greater flexibility and maintainability, enabling developers to easily make design changes without modifying the underlying HTML structure.

By utilizing CSS, web developers can create visually appealing websites that enhance user experience and accessibility. The use of CSS also promotes responsive design, allowing web pages to adapt to different screen sizes and devices. Overall, CSS is essential for achieving a polished and professional look in web applications.