Cannot change link color

Good morning,
i can’t change the color of hyperlinks.
There is no possibility to change it from “customize – color theme”.
I tried to use custom CSS but everything that appears included in the preview, once saved and public, isn’t viewable on the site.
Also I tried to attribute the color to:
a: link to: hover etc … but the color of the menu also changes.
On “inspect element” I saw that the links in the text are assigned the “customize-unpredictable” class, so I tried with the code:

.customize-unpredictable:link {
Red ;
text decoration: underlined

}
.customize-unpreviewable:hover {
Red
background color: green
}

“underline” and “background-color” work, but “color” no!
And they work only in the preview, , as mentioned before.

Not being an expert, I hope I have explained myself well.
Thank you!

• This topic was modified 6 years, 2 months ago by Steven Stern (sterndata).
• This topic was modified 6 years, 2 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic

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