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HTML (HyperText Markup Language) is the standard markup language for documents designed to be displayed in a web browser. It defines the content and structure of web content.
HTML elements are the building blocks of HTML pages. They are delineated by tags, written using angle brackets.
CSS (Cascading Style Sheets) is a style sheet language used for describing the presentation of a document written in HTML or XML. CSS describes how elements should be rendered on screen, on paper, in speech, or on other media.
CSS is among the core languages of the open web and is standardized across web browsers according to W3C specifications.
JavaScript (often abbreviated as JS) is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. Over 97% of websites use JavaScript on the client side for web page behavior.
JavaScript is a high-level, often just-in-time compiled language that conforms to the ECMAScript standard.