body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #0d0d0d;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
    padding: 20px;
    border: 1px solid #444;
    border-radius: 10px;
    background-color: #1a1a1a;
}