The test below works in my Firefox 2 and my Opera 9. But doesn't work in my Internet Explorer 5.5. It is valid CSS 2.1. I would like to know if it works in IE 6 and up, and if it works in Safari.
In the table below you are supposed to see an outer caption with red border (looks like a red box on top), and the inner captions with no border. You are supposed to see four black boxes, and no inner boxes.