VIDEO. [2], In at least one case, namely the permissible content of the element, the two specifications directly contradicted each other (as of July 2018),[update] with the W3C definition allowing a broader range of uses than the WHATWG definition. Because the web has changed. ... At W3Schools you will find complete references about HTML elements, attributes, events, color names, entities, character-sets, URL encoding, language codes, HTTP messages, browser support, and more: HTML Elements. Berners-Lee specified HTML and wrote the browser and server software in late 1990. It is not a programming language, but rather a language that identifies the meaning, purpose, and structure of text within a document. HTML5 is a markup language used for structuring and presenting content on the World Wide Web. Now, HTML5 provides support for media with elements like