How to edit text opacity in Velo css

Im trying to lower the opacity of the background of my horizontal menu to 0, using css code. Is this possible? If so how?

On the editing menu, I know you can lower the opacity of the background color, but for a specific thing im doing, I need to code it.

I have this at the moment (I put a color to test if its working or not):
.horizontal-menu {
background-color: antiquewhite
}

Hi, crayoarts !!

I haven’t tested the functionality, but by using rgba, it might be possible to set the opacity (alpha value) as intended. :raised_hands: :wink:

.horizontal-menu {
  background-color: rgba(255, 255, 255, 0.5);
}