Change Navigation Font Colour in Cart

Site URL: https://oncueregina.ca/cart

I've been playing around with some CSS for the webpage I have been working on. I am having an issue with the Cart page where the black navigation banner obscures the navigation menu because the font is black, and I can't seem to change the font colour on just the navigation menu for just this page. The fold down menus are fine though. Any ideas?

Site/Page: https://oncueregina.ca/cart (Not Live)

Password: TestTestTest

CSS Used So Far:

Quote

body#cart .header-announcement-bar-wrapper {
    background: black !important;
}

Hi,

Add to Design > Custom CSS

body#cart .header-nav-item>a {
    color: white;
}