Can a 3D Minecraft implementation be done entirely in CSS and HTML, without a single line of JavaScript in sight? The answer ...

Valve has reportedly fixed an HTML injection flaw in CS2 that was heavily abused today to inject images into games and obtain other players' IP addresses.

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.