body {
  background: radial-gradient(circle at top, #111, #000);
  color: #eaeaea;
  font-family: monospace;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: #0b0b0b;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 0 60px rgba(0, 0, 0, .8);
  text-align: center;
  width: 420px;
}

button {
  margin-top: 20px;
  padding: 10px 20px;
  background: #222;
  color: #fff;
  border: 1px solid #444;
  cursor: pointer;
}

#status {
  margin-top: 20px;
  min-height: 20px;
}

#flag {
  margin-top: 20px;
  color: #9cff9c;
  font-weight: bold;
}