Spain started Euro 2024 with an impressive 3-0 win against Croatia on Saturday in Berlin, but coach Luis de la Fuente asked his players to “keep our feet on the ground.” “In five days we have an important game against Italy so of course we’re going to think about that. We have to stay calm, our target is still very far away. We have to keep our feet on the ground,” he said in a news conference. Spain quickly built a 2-0 lead when man-of-the-match Fabian Ruiz set up Alvaro Morata in the 29th minute and scored a superb second himself three minutes later. Dani Carvajal added a third shortly befor…