In projects founded on HTML, CSS, and JavaScript, though, it’s often a pain to have to jump between contexts and always keep the thread of your tasks in mind.

For example, you could apply a magenta color to all the radio buttons on your page, as shown in Listing 3 (also see this live example). Listing 3. Controlling radio button colors in CSS ...

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. Figure A ...