Know the HTML is the key to getting a browser to display the web pages. HTML or Hyper Text Markup Language is the most widely used language on web.
Hyper Text is a way to organize information so that the user can click to jump from one piece of information to another. Markup is just something when the user added to a document to give it special meaning; for example, when the user use a highlighter pen the user are marking up a document. It is referring to the symbols that indicate how the text or images should be displayed in a browser.
When the browser reads HTML, it interprets all the tags that surround the text. The tags tell the browser about the structure and meaning of the text. With the information, the browser can decide how to display the information in a way that makes sense.
HTML tells the browser about the structure of the document: where the headings for a web page, what is a paragraph, what is part of a table and so on, so it can structure the document and render it properly.
HTML or Hyper Text Markup Language
