HTML

Elaborated form of HTML is Hypertext Markup Language. It is a markup language designed for such documents that will be display in web browser. HTML usually defines the web content structure and content.

HTML usually assisted with Scripting language, CSS and programming language, Javascript. 

The steps of opening a website is as bellow, 

At first web browser receives the HTML documents from web server.  Render the document into multi media web page. 

HTML elements are called the unit of web page. In a webpage after construction of HTML page,  other documents such as image,  interactive form,  video may be included. 

HTML tags are the elements of HTML,  it usually denoted by angle bracket closed.