body {
  background-color: black;
  color: yellow;
  font-family: 'Orbitron', sans-serif;
  text-align: center;
  padding: 50px;
}

.vault-container {
  background-color: #2e003e; /* deep purple */
  border: 2px solid yellow;
  padding: 30px;
  border-radius: 10px;
  max-width: 500px;
  margin: auto;
}

input[type="password"] {
  padding: 10px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  margin-top: 10px;
}

button {
  background-color: yellow;
  color: black;
  padding: 10px 20px;
  margin-top: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #ffcc00;
}

.hidden {
  display: none;
}