The main difference between CSS2 and CSS3 is that CSS3 has been split up into different sections, called modules. Each of these modules is making it’s way through the W3C in various stages of the recommendation process. CSS2 was submitted as a single document with all the Cascading Style Sheets information within it.
A polyfill, or polyfiller, is a piece of code (or plugin) that provides the technology that you, the developer, expect the browser to provide natively. To give you an example for explanation: sessionStorage is available in all the latest browsers (IE8 and upwards) but isn’t in IE7 and below. A polyfill can be used to plug the support for older browsers that don’t provide sessionStorage.
Asynchronous events are those occurring independently of the main program flow. Asynchronous actions are actions executed in a non-blocking scheme, allowing the main program flow to continue processing.
For those who are Novice learners, html stands for Hypertext Markup Language. In simple terms html is the back-end coding system that dictates how Web pages should appear and html5 is the latest version of it (*JFI: Old Version html4).
*JFI: Just for Information
Just few days back i was in a discussion with early stage computer engineering students, i was raised a question on what is the term Open Source really is? So i thought to write a brief post about it.
Open source refers to a program in which the source code is available to the general public for use and/or modification from its original design free of charge, i.e., open. Open source code is typically created as a collaborative effort in which programmers improve upon the code and share the changes within the community.
XSLT stands for eXtensible Stylesheet Language Transformations. It is far more sophisticated than CSS and is the recommended style sheet language of XML.
XML stands for EXtensible Markup Language, is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. It is a markup language much like HTML and was designed to carry data, not to display data.
In Simple terms XML Parser is a XML Processor. It analyzes the markup and passes structured information to an application.
XML was designed to transport and store data, with focus on what data is. It is a software & hardware independent tool for carrying information.
We all know (think so.. 
) that CSS stands for Cascading style Sheets, but what if someone ask us to define word CSS only. I read some where a very cool definition of CSS. Here i am sharing with you:
“CSS is a declarative language made of selectors, properties, values and schemes for priority and inheritance, defining how style apply”
