Animations stopped working after scene 3

[justawebbie]

I am new to all this so please forgive any issues or formalities I seem to not follow or understand.  I tried putting my stuff in a codepen as requested but it does not work at all when I did so not sure what I did wrong there.  i use Google Chrome and Firefox to try and toubleshoot my code but still learning there as well. I am on a MacBook Pro using El Capitan OS.

 

The issue I had was after scene 3 my animations would not work yet the first few scenes worked great.  You can see it in action if you like at http://justawebbie.com/centennial/index.html.

 

I am just not sure what I did wrong I went over the code to see if I misplaced a comma or bracket but do not see one thing out of whack.

 

Please and thank you for any help anyone can offer to a newbie.

See the Pen OXRdKZ by justawebbie (@justawebbie) on CodePen