HTML or HyperText Markup Language is the main
markup language for creating web pages and other
information that can be displayed in a web
browser.
HTML is written in the form of HTML elements
consisting of tags enclosed in angle brackets
(like <html>), within the web page content. HTML
tags most commonly come in pairs like <h1> and
</h1>, although some tags represent empty
elements and so are unpaired, for example <img>.
The first tag in a pair is the start tag, and
the second tag is the end tag (they are also
called opening tags and closing tags). In
between these tags web designers can add text,
further tags, comments and other types of
text-based content.
The purpose of a web browser is to read HTML
documents and compose them into visible or
audible web pages. The browser does not display
the HTML tags, but uses the tags to interpret
the content of the page.
HTML elements form the building blocks of all
websites. HTML allows images and objects to be
embedded and can be used to create interactive
forms. It provides a means to create structured
documents by denoting structural semantics for
text such as headings, paragraphs, lists, links,
quotes and other items. It can embed scripts
written in languages such as JavaScript which
affect the behavior of HTML web pages.
Web browsers can also refer to
Cascading Style Sheets (CSS) to
define the look and layout of
text and other material. The
W3C, maintainer of both the HTML
and the CSS standards,
encourages the use of CSS over
explicit presentational HTML.
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