How to change link color?

I use Brizy Free on WordPress 6.2, Theme “Freelancer Services”

I tried this CSS in the Theme Additional CSS, but I did not see any change. What I see is that after clinking the link the text has a rectangle around it in red.

.brz .brz-rich-text ul a:focus{
color: black;
}

.brz .brz-rich-text a:focus{
color: black;
}

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