Caen kept up their challenge for a Ligue 1 top-four spot with an impressive 2-0 win against fellow European hopefuls Nice.Ronny Rodelin got the hosts' afternoon off to a perfect start after 12 minutes, lifting the ball over Yoan Cardinale from Julien Feret's pass, before Andy Delort doubled Caen's lead from the penalty spot before the break.Nice offered a response early in the second half but found a stubborn Remy Vercoutre, with the Caen goalkeeper denying Hatem Ben Arfa, Dorian Caddy and Jean Seri.Feret almost scored a third Caen goal late on, but was denied a super Cardinale stop.