body {
    background-color: #121212;
    color: #e0e0e0;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.container {
    text-align: center;
    border: 2px solid #333;
    padding: 30px;
    border-radius: 10px;
    background-color: #1e1e1e;
}