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

#countdown-container {
    text-align: center;
}

#countdown {
    font-size: 5rem;
    font-weight: bold;
}

h1 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}