Why butterfly doesn't work?

Why butterfly doesn't work?
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#1

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
http://s.codepen.io/vivinantony/debug/bddxxq
http://www.thelittletechie.com/2015/05/beautiful-butterfly.html


#2

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