body,
html {
  background-color: #222;
  color: #ddd;
  width: 100%;
  height: 100%;
  overflow: hidden;
  margin: 0;
}

a {
  color: inherit;
  text-decoration: underline;
}

canvas {
  display: block;
  margin: auto;
  image-rendering: optimizeSpeed;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: optimize-contrast;
}

#paywall {
  text-align: center;
}

#insertCoin {
  background-color: #222;
  border: 1px solid red;
  color: red;
  cursor: pointer;
  margin: 0 auto;
  max-width: 200px;
  padding: 1rem;
  text-transform: uppercase;
}