[Help: Is this possible with GSAP?]

See the Pen BaLgMwJ by brtweed (@brtweed) on CodePen

Why can't a see the white section after the slides? And what makes the slide snap to the top of the screen on scroll?

Thanks for any help.

[Help: Is this possible with GSAP?]

I'm not a front-end developer so apologies in advance. 

 

I just want to know if the following is possible using GSAP : is it possible to have a full screen vertically scrolling gallery in the middle of a normal flowing webpage? So, user scrolls normally until they reach the gallery, then each slide would change on scroll until the last slide (slides using this effect: http://www.playersparis.tv/), then the page would scroll as normal to the footer.