What is HTML? Role of HTML CSS and JavaScript

What is HTML and Why it is used ? HTML is standard markup language for webpages HTML is used to create structure or skeleton of web pages HTML consists of series of elements that tells the browser how to display the content. Role of HTML, CSS and Javascript for designing webpages: HTML is used to create structure or skeleton of web pages and its content. CSS is a language for specifying how documents are presented to users  It adds presentation and style to the webpage JavaScript is the Programming Language for the Web. It is used to make webpages more interactive JavaScript can update and change both HTML and CSS JavaScript can calculate, manipulate and validate data.