Awesome button

Me and a couple other attendees to AEA were tweeting back and forth yesterday in response to something Dan said in his talk. This is my little test-case button.

I'd love to find out if border radius breaks for you at any point, especially in Safari. I guess Dan experienced Safari failing and reverted to squared corners and you had to be ultra precise to get semi-circle corners and not just rounded corners.

Here's the accompanying article and CSS. Please comment if you notice weirdness so we can figure out if this is a bug.