What is CSS3 used for? | CSS Meaning and Its Importance

In this lecture, we are going to learn about “What is CSS3 used for? and CSS meaning and its Importance in Web Development”. Are you know about CSS3? ooh, that’s not a problem. First of all, we will know about CSS. After reading this entire lecture, you will also know about the importance of CSS.

What is CSS3? | CSS Meaning

What is CSS3 and CSS Meaning: CSS stands for Cascading Style Sheet. It is the languages that are used to describe the presentation of the webpage. Like, It is used to add styles to web pages including design and layout which are written in HTML, XHTML, XML. CSS3 is the new version of CSS. CSS allows us to present the same pages at different devices with different resolution. CSS is independent of HTML and it can be used with any Markup Language. The separation of CSS from HTML makes it easier to maintain and uses.

History of CSS

  • CSS first version CSS1.0 was developed by W3.org in 1996.
  • The second version CSS2.0 released in 2010 by W3.org.
  • CSS 3rd version CSS3 released in 2012. It is standard and compatible with all browser.

How does CSS Work 

It works Internally and Externally inside a line. CSS Stylesheet saved with .css extension. It is embedded in the Head of HTML documents. It identifies two things

  1. Identify the elements of HTML and its effects.
  2. Tells the browser what to do.
[mks_pullquote align=”left” width=”848″ size=”16″ bg_color=”#d8d8d8″ txt_color=”#494949″]The part of statements which identify the Elements of HTML is called Selector. It used to select the page elements.[/mks_pullquote]

Syntax of CSS

In which included three things.

  • Selector
  • Property
  • Value
 H1 { color : red }

H1 is Selector in the following syntax. Color is a property and red is a value. One selector may have many properties like

H1 { color : blue ; size : 12px ; background : red ; }

All Tags are default Selector in CSS, user-defined Selector called ID and Classes.

Types of CSS in HTML

There are three following methods in CSS.

  • External CSS
  • Internal CSS
  • Inline CSS

Don’t worry, if  You are don’t understand foll0wing syntax that given below. In the upcoming lecture, we will read them with Details.

Internal CSS in HTML

In Internal, <style> tags are written between head tags of HTML  Documents.


<style> Code written between these two Tags </style>


Inline CSS in HTML

Style Property used for Inline CSS. The example tag of Inline CSS is given below.

<p style = " color : red ">  This is paragraph </p>

External CSS in HTML

In external CSS, each page of HTML must include a reference of external CSS inside <link> tag. Like


<link rel="stylesheet" type="text/css" href="mystyle.css">


Importance of CSS in Web Development

Cascading Style Sheet is an integral part of Web development. It is used for designing and control the structure of the Website. Web Developers used this to position their elements and allow them to present different style to different viewers. CSS Perform following functions that are given below.

[mks_pullquote align=”left” width=”848″ size=”16″ bg_color=”#d8d8d8″ txt_color=”#494949″]
  • Create Website layout.
  • Drop Down Menu.
  • Images galleries.
  • Create new web templates.
  • Animation creation.
  • Create rounded Border.
  • Horizontal and Verticle Menu.
  • Create Objects.
  • Many more…[/mks_pullquote]


CSS is very important to make any webpage. HTML works like human bones and CSS work like to design these bones. I hope this lecture is very helpful to know about ‘What is CSS3 used for? | CSS Meaning and CSS Importance‘   This is a complete series of CSS + video Tutorials. You can also learn about HTML5,PHP7, and Computer Graphic. Please, also give your feedback. Thank you!.

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