HTML5 Example

This example uses HTML5 markup.

This <div> is green in all browsers.

This <section> is green, except in Internet Explorer.

This <html5:section> is green, even in Internet Explorer.

See the source of this example.

Don't forget

To escape your colons with a backslash

Does this validate?

No! See:

The W3C validator
The .nu validator

However, it does work. It's a bit of a hack, but when you need to style HTML5 elements in Internet Explorer without Javascript, this is the only solution I know of so far.