HTML documents are built from elements defined by tags. Most elements consist of an opening tag, content, and a closing tag, while some elements are self-closing. Tags describe the meaning and role of the content they enclose, allowing browsers to interpret the structure and display the page correctly.

Example: HTML elements

<p>This is a paragraph.</p>
<strong>This text is important.</strong>
<br>

Here:

  • <p> defines a paragraph

  • <strong> emphasizes important text

  • <br> inserts a line break