html,
body {
  height: 100%;
}
h1 {
  margin: 0 0 12px;
  font-size: 18px;
  color: #535353;
  letter-spacing: 2px;
}
canvas {
  background: #fff;
  border: 1px solid #535353;
  image-rendering: pixelated;
  display: block;
  width: 96vw;
  max-width: 1600px;
  height: auto;
  margin: 0 auto;
}
.hint {
  margin-top: 12px;
  font-size: 12px;
  color: #888;
}