body {
    font-family: sans-serif;
    padding: 2rem;
    background: #f9f9f9;
}

form {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
}

input, button {
    padding: 0.5rem;
    font-size: 1rem;
}

#status {
    font-weight: bold;
    margin-top: 0.5rem;
}

.online {
    color: green;
}

.offline {
    color: red;
}