body {
  background-color: black;
  color: white;
  margin: 0;
}

canvas {
  display: block;
  margin: 0 auto;
  border: none;
  filter: brightness(200%);
}

button {
  background-color: white;
  color: black;
  padding: 10px 20px;
  font-size: 1.2rem;
  margin: 10px;
  border-radius: 5px;
  cursor: pointer;
}

#start-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1;
}

#start-screen h1 {
  color: white;
  font-size: 3rem;
  margin: 0;
  text-align: center;
}

#start-screen button {
  margin-top: 50px;
}

#game-over-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 2;
  display: none;
}

#game-over-screen h1 {
  color: white;
  font-size: 3rem;
  margin: 0;
  text-align: center;
}

#game-over-screen p {
  font-size: 1.5rem;
  margin: 20px 0;
  text-align: center;
}

#game-over-screen button {
  margin-top: 50px;
}