Prestashop 8.1. Pictures No Frame

[oktu.it]

Hello I'd like take out the small gray frame of the photos and also give less side padding. 

site: https://rebeccamilano.com/

any help?

[musicmaster]

When you inspect the image in the browser you see that it is declared for the surrounding div like this on line 212 of the page itself

.thumbnail-container .product-image-block {
  border: 1px solid #e1e1e1;
}

I hope you can solve it from here.

[oktu.it]

Thanks found easly.