body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, sans-serif;
    background-color: #005A8D;
    color: #FFFFFF;
}

.container {
    text-align: center;
}

#countdown {
    margin-top: 20px;
}

#countdown ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
}

#countdown ul li {
    margin: 0 15px;
}

#countdown ul li span {
    font-size: 40px;
    display: block;
}