body {
    background-color: #000;

    justify-content: center;
    align-items: center;
    display: flex;
    flex-direction: column;

    margin: 0;
    padding: 0;
    height: 100vh;
}

.countdown {
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
    font-size: 55pt;
    font-weight: 800;
}