.post-updates-subscription-form {
    padding: 20px;
    background: #f5f5f5;
    border-radius: 5px;
    margin: 20px 0;
    max-width: 600px;
}

.post-updates-subscription-form h3 {
    margin-top: 0;
    color: #23282d;
}

.post-updates-subscription-form input[type="email"] {
    padding: 10px;
    width: 70%;
    border: 1px solid #ddd;
    border-radius: 3px;
    margin-right: 5px;
    font-size: 14px;
}

.post-updates-subscription-form button {
    padding: 10px 15px;
    background: #0073aa;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
}

.post-updates-subscription-form button:hover {
    background: #005177;
}

#subscription-message {
    margin-top: 10px;
    padding: 10px;
    border-radius: 3px;
    font-size: 14px;
}

#subscription-message.success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

#subscription-message.error {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}