body {
    background-color: black;
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 20px;
}

  .header-container {
    color: white;
    margin-bottom: 20px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    margin: 10px;
}