html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: #fff;
  color: #000;
  font-family: system-ui, sans-serif;
}

canvas {
  border: 2px solid #444;
  display: block;
  margin: 20px auto;
  image-rendering: pixelated;
}

.controls {
  display: block;
  width: fit-content;
  margin: 20px auto;
}

.pb-20 {
  padding-bottom: 20px;
}

.pb-40 {
  padding-bottom: 40px;
}