Users interact with your application through their web browser. The role of the web browser is to display the HTML, JavaScript, and images. Each web document contains a section we call the head and a section we call the body.

The head contains the title tag, link tag, and script tag. The link and script tags allow the page to include external files for style sheets and JavaScript, respectively. Our application will contain links to style sheets and JavaScript for Bootstrap .

The body of the document has more information. The body is where the content seen in the browser will go. This includes the form, text displayed to the user, links, and images. All the content in the body will be marked up with tags, which determine how the content will render.

You can include comments in your web page that won’t show to the user. They help you document your page layout.