html, body {
  height: 100%;
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}