不能让滚动魔法在JSFIDDLE中工作（第1部分，共2部分）

I have a one page scrolling website that I'm working on. I am trying to implement ScrollMagic and pin the first section so that the remaining sections of the website scrolls over top of the pinned section. I tried to create a jsfiddle to show the issue, but I can't seem to get jsfiddle working (first time using fiddle so I may have something not linked up correctly. I have a one page scrolling website that I'm wo