body, canvas {
  display: block;
  margin: 0;
}

h1 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -60%);
  margin: 0;
  font-family: 'Source Sans Pro', sans-serif;
  font-size: 11vw;
  mix-blend-mode: difference;
  filter: invert(100%);
}