body {
    background-color: #719171;
    color: #0b0303;
    font-family: Arial, sans-serif;
    margin: 10px;
    text-align: center;
}

h1 {
    text-align: center;
}

nav {
    text-align: center;
}

nav a {
    color: #0000EE;
}

footer {
    text-align: center;
}

audio {
    display: block;
    margin-bottom: 2em;
    margin-left: auto;
    margin-right: auto;
}

h3 {
    margin-top: 2em;
}

#digital-clock {
    font-family: 'Arial', sans-serif;
    font-size: 1.5em;
    font-weight: bold;
    color: #006400;
    text-align: center;
    margin-top: 10px;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #f9f9f9;
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto; 
}