On these headings with icons, I’d like them them to change state when they stick in place (aka when 70px from the top). The way the “Scroll” event is presented, I thought I could do it with that, but it seems like that’s for the scroll container itself scrolling by a certain amount.
You can also see my struggles with this bug in the video 
If I understand you correctly I see two possibilities for your use-case. The scroll-event has to be defined on the container (since the scroll-event is fired by it), but you can select another cell as target and calculate the offset. (This only works if you know if the offset does not change):
or you use the Visible/Invisible in viewport on the cell above:
Here a little example (the first screen uses the scroll-event, the second the visible/invisible-event):
onscroll.atype.zip (183.0 KB)
Does this help?
Ah ha, the second technique worked perfectly for my needs. Thanks!
