body {
  font-family: sans-serif;
  text-align: center;
  background: #f5f5f5;
}

.board {
  display: grid;
  grid-template-columns: repeat(4, 80px);
  grid-gap: 10px;
  justify-content: center;
  margin-top: 20px;
}

.card {
  width: 80px;
  height: 80px;
  background-color: #2196f3;
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 3em;
  color: white;
  cursor: pointer;
  transition: transform 0.3s;
}

.card.flipped {
  background-color: #fff;
  color: #333;
  cursor: default;
}

#status-bar,
#score-bar {
  margin-top: 10px;
  font-weight: bold;
  font-size: 1.1em;
}