body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
}

.guestbook-container {
    max-width: 600px;
    margin: auto;
    background: #fff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

form {
    display: flex;
    flex-direction: column;
}

form input,
form textarea {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

form button {
    padding: 10px;
    border: none;
    background: #28a745;
    color: white;
    border-radius: 5px;
    cursor: pointer;
}

form button:hover {
    background: #218838;
}

#messages-container {
    margin-top: 20px;
}

.message {
    background: #f9f9f9;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
}

.message h3 {
    margin: 0;
    color: #333;
}

.message p {
    margin: 5px 0 10px;
    color: #666;
}

.message small {
    color: #aaa;
}