body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #222;
  color: white;
  text-align: center;
}

#gameContainer {
  position: relative;
  margin: 20px auto;
  width: 400px;
  height: 600px;
  background-color: #333;
  border: 2px solid #fff;
  overflow: hidden;
}

#player {
  position: absolute;
  bottom: 20px;
  left: 180px;
  width: 40px;
  height: 40px;
  background-color: #00ff99;
  border-radius: 4px;
}

.block {
  position: absolute;
  top: 0;
  width: 40px;
  height: 40px;
  background-color: #ff4444;
}

#score {
  font-size: 20px;
}