In response to the comments to my article on CSS compatibility on different browsers, I've tested the code used on the latest version of Opera — 9.50 Beta 1.
Pleasingly, all the examples have passed the test (see the screenshots below).
:enabled and :disabled
The :root pseudo-class worked correctly and the background colour of the document was set to blue.
The negation pseudo-class worked as well and the list items were displayed in italic.
So, there you have it. All the pseudo-classes I selected for testing worked smoothly in Opera 9.50 Beta 1. Thanks to all for your feedback. (And yes, even in png format)
— Posted By Lana Kovacevic