body, html {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: black;
  font-family: 'Courier New', Courier, monospace;
  color: #00ff88;
}
canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.overlay {
  position: absolute;
  top: 30%;
  width: 100%;
  text-align: center;
  color: #00ff88;
  text-shadow: 0 0 10px #00ff88;
}
.overlay h1 {
  font-size: 3rem;
  margin: 0;
}
.overlay p {
  font-size: 1.2rem;
}