body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: #222;
  color: #fff;
  padding: 30px;
}

h1 {
  margin-bottom: 20px;
}

#game-board {
  display: grid;
  grid-template-columns: repeat(5, 120px);
  grid-gap: 15px;
  justify-content: center;
  margin: 0 auto;
}

.card {
  width: 120px;
  height: 120px;
  background: #555;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  transform: scale(1);
  transition: transform 0.3s;
}

.card img {
  width: 100%;
  height: 100%;
  border-radius: 10px;
  display: none;
}

.card.flipped img {
  display: block;
}

.card.flipped {
  background: #fff;
  transform: scale(1.05);
}

#message {
  margin-top: 20px;
  font-size: 1.2em;
  font-weight: bold;
}