The results are eloquent, but just in case, I'm going to clarify it: it should be a yellow smiley face over a white background that when you pass the mouse over or near the nose, it becomes blue.
The most worrying is that the two most popular browsers give the worst results, forcing webmasters to optimize webpages for MSIE and Gecko, sometimes even breaking the compatibility with the standard, which causes problems to other minority browsers that follow the W3C rules, causing users to migrate to majority browsers thinking they interpret better the code (when in fact it's the opposite).
Yes, it's somewhat worrying that by far the most used browser is also by far (six years farther than one minority browser) the worst interpreting the code. In the Firefox case, it could be because of their obstinate interest in adding eye-candy features (despite its deficient configuration interface) and release new versions or because of a bigger direction towards security (factors in which Opera doesn't remain either back, or even goes more ahead, and even so it's able to pass the test), but in the IE case, I can't think in any excuse, since neither it is nice nor comfortable nor safe nor innovative.
I know, I can only expect a holy war and I may deserve it, but in this scenario, we are going to finish doing different versions of webpages for each browser.
I think that all this endorses to me if I decide not to go on applying fixes and workarounds for IE and Gecko in this webpage.