body {
  font-family: sans-serif;
}

h1 {
  font-size: 1rem;
}

.parent {
  width: 320px;
  height: 240px;
}

.parent canvas {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  background: #39f;
}