body {
  text-align: center;
  font-family: Arial;
  background: #f1f3f5;
}

#game-container {
  display: grid;
  grid-template-columns: repeat(3, 80px);
  gap: 10px;
  justify-content: center;
  margin-top: 20px;
}

.box {
  width: 80px;
  height: 80px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.1s;
}

.box:active {
  transform: scale(0.9);
}

#restart {
  margin-top: 20px;
  padding: 8px 16px;
}