body {
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #111;
    color: #0ff;
    font-family: monospace;
}

.clock {
    text-align: center;
}

#time {
    font-size: 60px;
    margin-top: 20px;
}