How would I go about adding normal scrolling content after some layered pinning sections? I have tried adding a new section outside of the trigger div but the screen is going white and not showing the added content area.
See the Pen JjEpaqd by Jase2018 (@Jase2018) on CodePen
Working on this without the linked extra CSS from the base codepen will make things easier for you to wrap your head around.
See the Pen 153ca19006b303b070b25e9648faa60e by akapowl (@akapowl) on CodePen
And here's a variation of that with the scrollable content below being revealed, too.
See the Pen bb978bd8e0ca242a41301ae3fd4b626f by akapowl (@akapowl) on CodePen