You can build many useful web apps with just a few files. You can also extend this simple notes app to add more functionality ...

Woolly, the CSS sheep. You just got a new web design gig. There’s a blank CSS file staring out from your favorite text editor. This time, you tell yourself, it’s going to be clean and simple CSS.

CSS: Enter CSS to be applied to the HTML used in your tests. ... Putting jsFiddle to use is as simple as loading the site and entering code in the appropriate areas of the page.