html, body {
  margin: 0;
  padding: 0;
  background: #0b0d12;
  color: #9aa3b2;
  font-family: "Courier New", monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}
#frame {
  margin-top: 24px;
  padding: 10px;
  background: #14171f;
  border: 1px solid #2a2f3a;
  box-shadow: 0 0 40px rgba(0,0,0,0.6);
}
#game {
  display: block;
  width: 960px;
  height: 540px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
  outline: none;
}
#hint {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 1px;
  color: #566;
  text-align: center;
}