IOS Icons made in Pure CSS (graphicpeel.com)

Is it just CSS?, I am on an iPad, can't look at source.

While this looks really awesome in webkit browsers, why not add the -moz-box-shadow and other -moz CSS3 properties also? (non-mozilla browsers should ignore them)

Great work, they look very nice.

These are no icons whatsoever. These are high resolution images with way too much detail to be ever used as icons.

Impressive in Chrome, but seriously they couldn't get them to work in Firefox?