jsFiddle is the perfect solution; it provides a custom environment (based on user selections) to test (or fiddle with) your JavaScript, HTML, and CSS code right inside your browser. A quick tour ...

CSS, which regulates the size, color, and layout of websites, has been decided. Many candidates were posted on GitHub during the selection process. Below is the CSS3 logo that has been used until now.

It's called Dash, and it lets users learn how to use HTML, Javascript, and CSS by working through four projects of increasing difficulty. As you progress through the projects — starting by ...