body,html {
  margin: 0;
  padding: 0;
  background: #222;
  overflow: hidden;
  font-family: monospace, monospace;
  color: #eee;
  user-select: none;
}

#gameCanvas {
  display: block;
  margin: 0 auto;
  background: #111;
  cursor: default;
}

#message {
  position: absolute;
  top: 10px;
  width: 100%;
  text-align: center;
  font-size: 20px;
  color: #ff0;
  text-shadow: 0 0 5px #ff0;
  pointer-events: none;
  user-select: none;
}