Sponsored When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Download HTML, CSS, & JavaScript All-in-One For Dummies ($39.99 Value, now FREE ...

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.

Sure, HTML and CSS are the foundations of web development, offering the basic structure and formatting that make web pages and apps what they are today. But without the pre-eminent programming ...