Original Text (This is the original text for your reference.)

A lid for an opening device (1) for a container (100) comprises a body (25) having a longitudinal axis (B) and provided with a top wall (27) and with a side wall (28) internally provided with a thread element (29) suitable for cooperating with a further thread element (30) of a spout (12) of said opening device (1), said lid (18) further comprising at least one driving element (50) arranged to receive the fingers of a user during unscrewing of said lid (18) from said spout (12) and during screwing of said lid (18) on said spout (12), said at least one driving element (50) being delimited by an upper wall (56) and by a lower wall (57) extending from said side wall (28) and spaced apart from each other along said longitudinal axis (B), said lower wall (57) diverging from said upper wall (56) when moving away from said side wall (28).