Mega Menu - how to make dropdown appear BEHIND header

[user5814]

I’m having trouble with
I have a divider set on the sticky header that the mega menu lives in. Basically I want the mega menu dropdown to appear BENEATH the header so that the divider can remain and I don’t have to set a background to the header section that might then clash when another page has a different background color.

Site link

Home | My Site 1

(ignore the fact that layout and design of everything is really whack right now)

Extra context
I have a teeny tiny bit of coding experience but very little in Wix

[CODE-NINJA]

You can not set the background of your MegaMenu to → TRANSPARENT ← ???

So normaly if i can play around with your sites’s COLORS & OPACITY, from outside of your editor, then you also should be capable to do it from inside of your Wix-Editor.