html, body {
  margin:0;
  padding:0;
  background-color:#fff;
}

canvas {
  display: block;
  width:500px;
  height:500px;
  background:#000;
}
body h1 {
  position: fixed;
  display: block;
  width: 100%;
  text-align: center;
  color: #FFF;
}
body h2 {
  position: fixed;
  font-style: italic;
  display: block;
  margin-top: 3.0em;
  width: 100%;
  text-align: center;
  color: #FFF;
}