body {
  background: #222;
  color: #fff;
  margin: 0;
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100vh;
  justify-content: center;
}

#gameContainer {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#pongCanvas {
  background: #111;
  border: 4px solid #fff;
  display: block;
  margin-bottom: 16px;
  box-shadow: 0 0 24px #000;
}

#score {
  font-size: 2rem;
  letter-spacing: 8px;
  text-align: center;
  margin-top: 8px;
}