Mobile menu change color on hover

Hi,

I am back to use this great theme.

I want to change the hover color on mobile menu, exactly the hover color of the “kad-menu-name” and “kad-navbtn”.
I tried this in child theme custom css:

.nav-trigger-case:hover .kad-menu-name, .nav-trigger-case:hover .kad-navbtn {
color: #000000;
}

but it doesn’t work.
Please help, thanks.