Soooo, you can’t interact with an element that has a negative z-index.

<div>A</div> --> z-index of 5
<div>B</div> --> z-index of -1

Even if A has pointer-events: none; you won’t be able to touch B

<div>A</div> --> z-index of 5
<div>B</div> --> z-index of 0

Can touch B