Football is a game played between two teams of 11 players who try to score by kicking or heading a ball into the opposing team's goal. Ten outfield players cannot use their hands while the goalkeeper can handle the ball within the penalty area. Referees enforce rules and can issue yellow or red cards for fouls. Matches last 90 minutes total. The modern rules were established in 1863 in England and international competition has grown significantly since, including the FIFA World Cup held every four years and UEFA competitions in Europe. While the game has expanded globally, some argue players do not always demonstrate fair play espoused by governing organizations.