It doesn't seem to run for me. It sits on a blue screen.
Maybe your browser doesn't have WebGL enabled. Does this website work for you? https://get.webgl.org/
Thanks, I hope so too. :)
Maybe you could open the browser console and see if there is an error message? If you right-click on this page and then select 'inspect' you should see the developer menu. If you click on "console" then you migth see an error message there. At least that's how it works in chrome.