https://codepen.io/Koalink/pen/wvMqwby
The problem I encounter is only in Firefox :
Loading the page with a window size less than 960px.
Scrolling 200px to see the animation on the "logo" (scaled at 50%).
Resize the window and the problem appears: markers remain visible, the "logo" is still at 50%, scrolling at the top still activates the animation.
Do you see the same bug?