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CSS is one of the three core technologies of World Wide Web content production; the other two are HTML and JavaScript. How does CSS work? CSS is a language that is used to style HTML documents.

We list the best HTML online courses, to make it simple and easy to improve your website design and development skills, from beginner to advanced level. HTML and CSS form the basic coding ...

Output: The results of executing the CSS, HTML, and JavaScript entered into the sections of the page. Figure A shows jsFiddle loaded in Internet Explorer 9 with empty code panes.

While HTML, CSS and JavaScript are powerful tools, they tend to run out of steam with development of advanced web applications that store data on the client side and manage complex state transitions.