Landing Page with Crelly Slider - Transparency, Opacity Menu Bar


second topic for Crelly Slider Problems.

I have set up a new landing page and used Crelly Slider to get a nice first view. But I did not make it to get the menue bar transparent like on startpage and only colored if I scroll.
I played with

.site-header, .site-header.header-scrolled {
    background-color: rgba(32,37,41,0.9);

and set rgba to (32,37,41,0.1). But that changes the menu bar completely, no matter if scrolled or not. Even though on every page.

How can I add appropriate code to change only the appearance of this single page?
New Landing Page

Thank you

Hello TomDoe,

CSS code in the following topic should resolve this issue as well:

Kind Regards, Roman.