Why butterfly doesn't work?

pen: [ http://codepen.io/ustvarno/full/mEjBXo/ ]
Before it worked, now it doesn’t on android ( google chrome )

here forked previous version
pen: [ http://codepen.io/ustvarno/pen/jrzjgV ]
but there also start to not working

but here where i took the code for butterfly it works, on android on what i also tried portfolio

love your portfolio! Don’t know about the butterfly.

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