Hi,
just a quick question: is it possible to run the animation only once the trigger has been reached? So that I scroll back the animations don't run again?
Yes, and that is a very common question.
See: https://github.com/janpaepke/ScrollMagic/issues/201, https://github.com/janpaepke/ScrollMagic/issues/274, https://github.com/janpaepke/ScrollMagic/issues/83, https://github.com/janpaepke/ScrollMagic/issues/71
Please follow the troubleshooting guide and use the search first.