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.

This definition explains the meaning of CSS (cascading style sheets) and how using them with HTML pages is a user interface (UI) development best practice that complies with the separation of concerns ...

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.