Gutenslider arrows z-index above mobile menu

Problem:

Solution: Custom block CSS

.wp-block-eedee-block-gutenslider .eedee-gutenslider-nav {
...
z-index: 20 // My mobile menu is at 10. So setting it to 9 fixes it.
...
}

Inquiry: Could you add a GUI preference for this?

• WordPress → Settings → Gutenslider:
  Arrow Button Z-Index: 20
  _{Hint: Change this in case that they are invisible or overlap other visual elements which they shouldn’t, such as the arrow buttons floating over your menu or similar.}