body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Arial', sans-serif;
}

.content {
    padding: 20px;
    text-align: center;
}

#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7); /* Dark overlay */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999; /* Ensure it's on top */
}

#countdown {
    font-size: 100px; /* Large numbers */
    font-weight: bold;
    color: white;
    letter-spacing: 5px;
}