html, body {
  margin: 0;
  padding: 0;
  background: #0d0d0d;
  font-family: "Segoe UI", Arial, sans-serif;
}
#game {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}
#game canvas {
  display: block;
  margin: 0 auto;
}