Getting_started_with_HTML/5.txt at main · Omprakash557/Getting_started_with_HTML · GitHub

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5.	What is the DOCTYPE Declaration in HTML?

Ans :

All HTML documents must start with a <!DOCTYPE> declaration.

HTML <!DOCTYPE> tag is used to inform the browser about the version of HTML used in the document. It is called as the document type declaration (DTD).

Technically <!DOCTYPE > is not a tag/element, it just an instruction to the browser about the document type. It is a null element which does not contain the closing tag, and must not include any content within it.

In HTML 5, the declaration is simple:

<!DOCTYPE html>

The <!DOCTYPE> declaration is NOT case sensitive.

Let's see an example of HTML document with doctype declaration.

<!DOCTYPE html>
<html>
<head>
<title>This is the title</title>
</head>
<body>
This is the content of the document.
</body>
</html>