Hello,

Please give a link to a page where we can see this sidebar.

Where did you get this color variable from?

--theme-right-rail-background-color--rgb

I don't think this variable exists.

Try this instead:

.page__right-rail {
  --right-rail-background-color: rgba(var(--theme-page-background-color--secondary--rgb),.7);
}

@Oot42 this was the first thing i tried

even after deleting the entire code, it was still transparent

@Muchos i forgot to mention you there, my bad

it's strange, because all of a sudden after i went through the previous themes to see what changed, by the time i caught back up to my most recent edits it had fixed itself, and the sidebar wasn't transparent anymore

^i didn't actually change anything

It didn't work initially because as I said, the variable you first used does not exist.

The code I provided does work. I tested it.

"all of a sudden ... it had fixed itself ... i didn't actually change anything"

You changed the wrong variable to the one I provided. That's why it worked.

But you probably didn't clear your browser chache. That's why you didn't see the changes. You always need to do that after editing Common.css, as it is mentioned on top of it, or it will take until whenever your browser does it by itself for you to see it.