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HTML stands for HyperText Markup Language. It is the standard markup language used to create and structure content on the web.

HTML elements are the building blocks of web pages, represented by tags such as <div>, <p>, and <a>.

CSS (Cascading Style Sheets) is a stylesheet language used to describe the presentation of a document written in HTML.

CSS handles the look and feel of a web page, including:

JavaScript is a versatile programming language that enables interactive and dynamic behavior on web pages.

It can be used for a wide range of tasks, from simple form validation to building complex single-page applications. JavaScript runs in the browser and can also be used on the server side with environments like Node.js.