body {
  margin: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: #282c34;
  font-family: Arial, sans-serif;
}

canvas {
  display: block;
  background-color: #ffffff;
  border: 2px solid #000000;
}

#gameCanvas {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  max-height: 100vh;
}

#gameOver {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 20px;
  text-align: center;
  border-radius: 10px;
}

#restartButton {
  background-color: #4caf50;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 5px;
}

/* 풀스크린 버튼 스타일 */
#fullscreenButton {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  border-radius: 5px;
  z-index: 10; /* 다른 요소 위에 표시 */
}