What does the Web browser do?

You already know how a browser works: you’re surfing around the Web and you click on a link to visit a page. That click causes your browser to request an HTML page from a Web server, retrieve it, and display the page in your browser window.

But, how does the browser know how to display a page? That’s where HTML comes in. HTML tells the browser all about the content and structure of the page. Let’s see how that works...