html,
body {
  background-color: #f7f7f7;
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  touch-action: none;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
}
canvas {
  box-shadow: 2px 2px 24px #121212;
}