FLIPPED_CARD_TIME = 3
MAX_ATTEMPTS = 3
NUMBER_OF_CARDS = 8
FLIPPED_CARD_COLOR = (168, 168, 168)
COMPLETE_CARD_COLOR = (255, 255, 255)
FLIPPED_CARD_TXT = '?'
SAME_CARDS_TIME = 2 * 1000
DIFFERENT_CARDS_TIME = 1 * 1000