body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(to bottom, #0d1b2a, #1b263b);
    color: #f0f0f0;
    font-family: 'Segoe UI', sans-serif;
    text-align: center;
    font-size: 2em;
}

.countdown {
    font-size: 2em;
}