CSS (Cascading Style Sheets) is a stylesheet language used to control the presentation and layout of HTML elements on a web page. While HTML is used to define the structure and content of a webpage, CSS is responsible for how that content looks—its colors, fonts, spacing, positioning, responsiveness, and overall design.
To separate content (HTML) from design (CSS), making code cleaner and easier to maintain.
To apply consistent styling across multiple pages of a website.
To enhance the visual appearance of web pages with colors, layouts, fonts, and animations.
To support responsive design and ensure that web pages work on various devices and screen sizes.
To improve user experience by making interfaces more attractive and usable.