body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #ffffff;
    color: #000000;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    flex-direction: column;
    transition: background-color 1s, color 1s;
}

#time {
    font-size: 8vw;
    font-weight: bold;
}

#date {
    font-size: 3vw;
    margin-top: 20px;
}