body {
    font-family: Arial, sans-serif;
    background: url('https://ychef.files.bbci.co.uk/1280x720/p02k6vry.jpg') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
}

.clock {
    background: rgba(255, 255, 255, 0.8);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    opacity: 60%;
}

#time {
    font-size: 70px;
    margin: 0;
    align-self: center;
}

#greeting {
    font-size: 24px;
    margin: 10px 0 0;
}