That is, they have an opening tag and a closing tag. The opening tag turns on a feature specified by a tag and the closing tag turns the feature off. For example, starts an unordered list and ends the list. Everything in between the opening tag and the closing tag is referred to as the content of the tag. The content of one tag can also include tags.
Every tag starts with a tag name.
Consider using one case consistently to make the HTML text easier to read. Attributes will be discussed in a later presentation. Spaces, tabs, and new lines in the HTML document are ignored. The browser will rearrange the text and graphics to fit in the display area of the browser. A tag in the content of another tag is called an inner or nested tag.