Text color

Hi, my web hosting server had a major incident and I now have to rebuild my website. I’ve been looking through old CSS you gave me here, and I’m trying to use this code to make adjust my text in the nav bar but I want to make the text more white but nothing I do changes it. Here is the CSS. Is this still correct?

@media all and (min-width: 800px) {

.menu-primary {
background: black;
}
.menu-primary a,
.menu-primary a:link,
.menu-primary a:visited {
color: white;
}
.toggle-dropdown {
color: white;
}
.current-menu-item,
.current_page_item,
.current-menu-ancestor,
.current_page_ancestor {
color: white;
background: #222;
}
}

Also, I would like to have arrows on the nav bar showing there’s a drop-down menu. Can you help with that?

AND, my nav bar isn’t showing up when on mobile.

The page I need help with: [log in to see the link]