Radio buttons not showing in chrome

hi. I have a site with some radio buttons that aren't showing in Chrome.

It works fine in IE and Firefox, but the radio buttons won't show in Chrome.

This is an ecqid store.!/Personalized-Cutting-Board-Custom-Engraved-Bamboo-Cutting-Board-15-x-12-Handle-Design-1/p/43745079/category=11219421

I've attached a screen shot of them side by side.

What can I do to get these radio buttons to show?