FAQ: Learn HTML - Common HTML Elements - The `<html>` tag

This community-built FAQ covers the “The <html> tag” exercise in Codecademy’s lessons on HTML.

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2 posts were split to a new topic: Why do we need the tag after the declaration?

2 posts were split to a new topic: Why do you need to put “< !DOCTYPE html >” in capital letters?

6 posts were split to a new topic: Does declaring language conflict with declaring the document as html?

How could we specify a different HTML version than HTML5?

The simple answer is to specify a different doctype.

https://en.wikipedia.org/wiki/Document_type_declaration

1 Like

Dear respected sir/madam ,why we use this sign ( ! ) before writing DOCTYPE , what this symbol means?

Owing that there are several document types, of which HTML is but one, the DTD, or Document Type Declaration is of necessity written in another language. SGML is the language that DTDs are written in.

The role played by SGML in the early days may well have been supplanted by XML in modern times. Either way, it’s another language helping the client to adapt to the current document with which it is interacting. On top of that we have C++ (C# in IE and Edge, Go in Chrome) helping ES manage the behavior of the interface as well as manage the style sheets and other browser features.

All the behind the scenes stuff is of no concern to us on the development side. It’s what we call tools. We didn’t make the hammer or wrench, only use them.