Fix for new github

[nallwhy]

I've fixed it because it doesn't work at new Github profile page.

Because the contribution view got smaller, I reduced the size of canvas and cube.
I tested it on chrome and firefox. But I don't know how to add safari extension, so didn't test it on safari.

Thanks.

[Sinequanonh]

Thank you, good job!

[jasonlong]

Thanks for jumping on this @nallwhy. It looks good to me. The only other thing that needs fixed is having the isometric chart (and button options) stay when you select a different year. That could be done in a separate PR though.

[nallwhy]

@jasonlong I'm so happy to contribute to this awesome product!