Ocean WP hover frames in Firefox

Dear,

Would appreciate your comments on my odd problem. I am developing two e-commerces based on Ocean WP and Elementor Pro – in both I have same odd problem, but only on Firefox browser.
Here is a description:

1. When you click on a product card there is a rectangle frame appearing on click:
https://kutku.pl/sklep/
https://www.caseownia.com/sklep/

2. When I click any link on both of the websites I have frames around links – either on navigation menus or text links – this problem occurs in both in the Firefox and Chrome, while Safari shows none of these odds pertaining point 1 and 2

I have disabled frames in the menu on hover. Searched around the theme and Elementor, to find the frames on links, but no success.

Thank you in advance for your valuable time.

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