HTML Tags

HTML tags are element names surrounded by angle brackets:

<tagname> content goes here... </tagname>

HTML tags normally come in pairs like <p> and </p>
The first tag in a pair is the start tag, the second tag is the end tag
The end tag is written like the start tag, but with a forward slash inserted before the tag name

The start tag is also called the opening tag, and the end tag called the closing tag.

Web Browsers

The purpose of a web browser (Chrome, Edge, Firefox, Safari) is to read HTML documents and display them.

The browser does not display the HTML tags but uses them to determine how to display the document

Below is a visualization of an HTML page structure

<html>

<head>

<title>Page title</title>

</head><body>

<h1>This is a heading</h1>

<p>This is a paragraph.</p>

<p>This is another paragraph.</p>

</body>

</html>

The <!DOCTYPE> declaration represents the document type, and helps browsers to display web pages correctly.

It must only appear once, at the top of the page (before any HTML tags).

The <!DOCTYPE> declaration is not case sensitive.

The <!DOCTYPE> declaration for HTML5 is:

<!DOCTYPE html>

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