Make submenus semi transparent

How can we get the submenus to appear semi-transparent so that content underneath it shows through?

Please advise!

Hello, could you help us understand what css to add and where so that we can control the transparency of sub-menu items.

Please advise

Hi MakeITwork,
Thanks for contacting us and choosing our product!
Sorry for the late reply
About you problem. Please go to module JUX CSS3 Mega Menu-> tab advanced config Custom CSS
add css
#js-mainnavcss3.noJS ul.megamenu li.haschild > div.childcontent .childcontent-inner-wrap, #js-mainnavcss3 ul.megamenu li.haschild.megacss3:hover>div.childcontent.adddropdown{
background: rgba(255,255,255,0.15);
}
You can choose the color for the reasonable value. Thanks