Revelon on "Mobile version menu background color"

Hey there, I am using this theme and it works great.
However on mobile, my logo has a colored background behind it. And my logo is white on a blue slider image, so it really takes away from the look of it all.
I would like this background color to be transparent, but I can't seem to do so in the customize menu.

Do I have to add custom lines of css code? And if so, which lines would work for this specific menu. I already tried it once but it didn't seem to work, I probably had a name wrong here or there, I don't wish to mess it up.

Any help?

Revelon, In order to get a transparent background, your logo must be saved as PNG file...

It is.. Of course it is.. The theme adds a background to it because it's a menu.

Hello Revelon,

I thought you should need to apply the following CSS code through the Simple Custom CSS plugin or child theme's style.css.

.site-header{ background-color: transparent !important;
}

Let me know how it goes.

Regards,
Kharis

Hi Kharis, first of all, thank you.
This is going to sound weird;

your code did affect the look, however now instead of it being transparent.
it's just completely white.
so the bar tued from grey to white and the logo is white as well
(white on white..)
perhabs it's in the theme that I can't change it to transparent, there must always be a background color and if transparent then white.
Of course that's just guessing on my part.. I would like it not to be the case.

So now I'm left with a big block of white on top of my website.
In my website's 'Customize' option, under color. The button that affects the color in question, is called menu background.