CSS styles web pages for layout and design, while JavaScript adds interactivity, dynamic content, and enhanced functionality to websites.

Introduction to Frontend Development involves creating the visual and interactive parts of a website or application using HTML, CSS, and JavaScript. HTML structures the content, CSS full stack training in trivandrum styles layouts and designs, and JavaScript adds dynamic functionality and interactivity. Together, these technologies enable developers to build responsive, user-friendly, and engaging web interfaces that work seamlessly across devices and browsers.