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 What is CSS?

CSS (Cascading Style Sheets) is a vital language for defining the visual presentation of web documents coded in HTML or XHTML. It plays a pivotal role in web design by allowing developers to apply various styles, including colors, fonts, and layouts, to enhance the appearance of web pages.

By separating presentation concerns from the structure and content of a website, CSS facilitates easier maintenance and updates. This separation ensures that changes in design can be implemented without altering the underlying markup, resulting in a more efficient development process.

Moreover, CSS empowers developers to create responsive designs that dynamically adapt to different screen sizes and devices. This responsiveness is essential for providing an optimal user experience across various platforms, including desktops, tablets, and smartphones.