Text link colour change on hover at the main page

Site URL: https://www.orsoyasierraphotography.com/home

Hiya, I have tried to find a similar custom CSS in the forum with no luck. Live support said it could not be changed on the regular way. I would like to change the text links on hover to black. No idea how to do it: https://www.orsoyasierraphotography.com/home

Those are pale grey and I want them to become black when active.

Any suggestions please? Thanks in advance!

Add to Design > Custom CSS

div#block-60061b1adea472688fd75d55 a:hover {
    color: black;
}