body,
html {
  margin: 0;
  padding: 0;
  height: 100vh;
  background: white;
}

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

canvas {
  width: 100vmin;
  height: 100vmin;
  display: block;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-crisp-edges;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

#menu {
  display: none;
  position: absolute;
  bottom: 20px;
  right: 50%;
  transform: translateX(50%);
  background: white;
  border: 1px solid black;
  padding: 10px;
}

#menu button {
  background: none;
  border: 0 none;
  text-decoration: underline;
}

#menu.is-active {
  display: block;
}