body {
    background-color: #0a0a0a;
    color: #00ff00;
    font-family: 'Courier New', Courier, monospace;
    text-align: center;
}

.container {
    max-width: 600px;
    margin: auto;
    padding: 20px;
    border: 2px solid #00ff00;
    border-radius: 10px;
    background-color: rgba(0, 0, 0, 0.8);
}

button {
    background-color: #00ff00;
    border: none;
    padding: 10px 20px;
    margin: 10px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #009900;
}