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# html Tag

The `<html>` tag indicates the beginning and end of a web document.

Before declaring the html tag, the webpage should declare `DOCTYPE` to let the browser know which version of HTML is used to create the page.

The widely used HTML version on the internet is `HTML5`, and by declaring `<!DOCTYPE html>` at the top of the HTML document, it signifies that the document adheres to HTML5.

```html title="Declaring DOCTYPE"
<!DOCTYPE html>
<html>
  
</html>
```

> *Note*: HTML was first introduced in 1991 and has seen various versions since then. The main versions of HTML are as follows.

### HTML (1991)

The original version of HTML was introduced by Tim Berners-Lee, the creator of the World Wide Web.

### HTML 2.0 (1995)

The first standardized version of HTML, improved based on feedback from diverse members of the web community.

### HTML 3.2 (1997)

Added JavaScript to control the behavior of web pages.

### HTML 4.0 (1997)

Introduced stylesheets (CSS) for decorating web pages and improved input forms.

### HTML5 (2014, Current Version)

Added various tags such as `<canvas>`, `<video>`, `<audio>`, and modern features like `localStorage` which acts as storage within the web browser.

<br />

## `<html>` Tag

The *html* tag serves as the root (topmost) element of an HTML document and must be placed at both the top and bottom of the document.

Within the `<html>` tag, it includes the `<head>` tag, which contains information about the web page, and the `<body>` tag, which contains the content displayed on the webpage.

<br />

## Internal Structure of HTML Tag

```html title="Basic Structure of an HTML Document"
<!DOCTYPE html>
<html>
  <head>
    
  </head>
  <body>
    
  </body>
</html>
```

The HTML tag can designate the main language of the webpage using the *lang* attribute.

For example, a webpage primarily in English can be represented as `<html>` with the appropriate lang attribute.

<br />

```html title="Example of Using HTML lang Attribute"
<!DOCTYPE html>

<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Webpage Title</title>
  </head>
  <body>
    <h1>Section Title</h1>
    <p>Section content</p>
  </body>
</html>
```

An HTML document must always start with the `<!DOCTYPE html>` declaration. This informs the browser that the document is written in HTML5. The `<html>` tag comes right after this declaration.

### An HTML document must always start with the `<html>` tag.

html Tag

HTML (1991)

HTML 2.0 (1995)

HTML 3.2 (1997)

HTML 4.0 (1997)

HTML5 (2014, Current Version)

<html> Tag

Internal Structure of HTML Tag

An HTML document must always start with the <html> tag.

`<html>` Tag

An HTML document must always start with the `<html>` tag.