Your browser has not created the <canvas> that we asked for. Consider installing a recent version of Mozilla Firefox, or GNU IceCat if you are interested in software that is purely free (as in speech). Alternatively, you could take the time that you would have spent here and use it instead to earn money and donate to the Free Software Foundation. If earning money would require violating good software ethics, you could always donate the time directly to convincing people to call it GNU/Linux.
Your browser doesn't care about CSS, either. Nice!