CSS, on the other hand, is responsible for the visual presentation and styling of HTML elements. It allows developers to control the layout, colors, fonts, spacing, and other design aspects of web pages. CSS works by selecting HTML elements and applying rules and properties to define their appearance. By separating the structure (HTML) from the presentation (CSS), developers can easily make changes to the design without altering the underlying content.

Using HTML and CSS together, developers can create visually appealing and well-structured websites. HTML provides the semantic structure and content, while CSS adds the styling and visual enhancements. The combination of these technologies enables the creation of responsive, accessible, and user-friendly web pages.

Both HTML and CSS have evolved over the years, with HTML5 and CSS3 being the current versions. HTML5 introduced new elements and features, such as video, audio, canvas, and improved semantics, while CSS3 brought advanced layout options, animations, transitions, and more.

Understanding and mastering HTML and CSS is essential for anyone involved in web development, as they form the core building blocks for creating modern websites and web applications.