HTML (HyperText Markup Language) is the standard language used to create and structure content on the web. It describes the structure of a webpage semantically and consists of a series of elements that browsers render as content.
CSS (Cascading Style Sheets) is a stylesheet language used to describe the presentation of a document written in HTML or XML. CSS controls layout, colors, typography, and responsive behavior.
JavaScript is a high-level, versatile programming language that enables interactive features on web pages. It runs in the browser and can communicate asynchronously with servers to fetch data without reloading the page.