body {
  margin: 0;
  height: 100vh;
  background: #181818;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* What the buttons will be positioned relative to */
#game-container {
  position: relative;
}

/* Keeps the canvas from having weird extra spacing */
#game-container canvas {
  display: block;
}