How to prevent a specific website from linking to my website

Hi! I have spoken to my host and they said this is done by CSS code by the developer of the Theme.
I want to prevent a website to linking to my website, especially the Photo Galleries, either the page or individually.
https://gayazaoldgirls.com/photo-galleries/

I can give you the name of the website, but if it can be done for any website, that would be good.

Hello,

It’s not a theme issue, but you can check this link:

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.

Thanks. I had already found that link on Google. Not sure if it will affect the theme as I am not a developer.
I will have to ask someone else to help as I do not know where to put the code given in the link.

Hello,

This is web server issue, I think that you should contact your host regarding this.

Kind Regards, Roman.