html, body {
  margin: 0;
  padding: 0;
  background: #111;
  color: #fff;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  overflow: hidden;
}

main {
  width: 100vw;
  height: 100vh;
}

canvas {
  display: block;
}