I’ve solved in that page by deleting custom css from xstore theme options panel.
But now the issue persist on pages:
https://riccacristallerie.it/vendita-online/servizi-per-la-tavola/posateria/
https://riccacristallerie.it/vendita-online/decorazioni-per-la-casa/cornici/
Edit: Activating your Fronted Optimized CSS options i’ve solved The page cornici but now issue still looking on posaterie
Please, view as soon as possible and test on all main browsers