html, body {
  margin: 0;
  padding: 0;
  background: #000;
  color: #fff;
  font-family: "Courier New", monospace;
  height: 100%;
}
#wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
h1 {
  color: #ffcc00;
  letter-spacing: 8px;
  margin: 8px 0;
  font-size: 28px;
  text-shadow: 0 0 12px rgba(255, 204, 0, .6);
}
#game {
  image-rendering: pixelated;
  border: 3px solid #2121de;
  border-radius: 6px;
  box-shadow: 0 0 24px rgba(33, 33, 222, .5);
  background: #000;
}
#help {
  color: #888;
  font-size: 12px;
  margin-top: 10px;
}