Thank you for providing an excellent guide on creating a stacked card. @mvaneijgen
However, I'm still quite confused, particularly regarding the pin-spacer, as it seems to occupy a significant amount of space when pinning elements. To illustrate my point more clearly, I've created a CodePen demo that can be embedded here.
https://codepen.io/metal-joker/pen/abxKBzX
There's two error in this demo:
1. The title glitches slightly when it is pinned.
2. When the title is pinned, the pin-spacer begins to scroll before the real content, preventing the real content from being fully displayed.
I hope this clarifies my question. Thank you for your time once again.