How to remove the related post border ?

Hi @vagabondfrog sorry for the slow reply.

Adding this CSS to your theme would remove that border:

.yarpp-thumbnails-horizontal .yarpp-thumbnail{
border:none !important;
}

Let me know how it goes!

Works like a charm, thanks a lot !

By the way, do you have a list of your CSS classes somewhere just so I could tweak it furthermore if need be ?

It’s ok for the delay, I am not in a hurry ??

Nice! No we don’t have a published list of CSS classes in use by YARPP.
I think the best approach for you would be to make sure you’re familiar CSS selectors and use your web browser’s developer tool to inspect the HTML generated by YARPP (eg here’s an article on how to do that in Google Chrome).

Does that help? If you have another specific question I can give you some advice.

Ok no problem, it’s what I do usually ??