.rss-newsletter-form {
    max-width: 400px;
    margin: 0 auto;
}

.rss-newsletter-form input[type="text"],
.rss-newsletter-form input[type="email"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}

.rss-newsletter-form input[type="submit"] {
    background-color: #0066cc;
    color: #ffffff;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}

.rss-newsletter-form input[type="submit"]:hover {
    background-color: #0052a3;
}

.rss-newsletter-message {
    margin-top: 10px;
    padding: 10px;
    border-radius: 4px;
}

.rss-newsletter-message.success {
    background-color: #dff0d8;
    color: #3c763d;
}

.rss-newsletter-message.error {
    background-color: #f2dede;
    color: #a94442;
}

.newsletter-success-message {
    background-color: #dff0d8;
    border: 1px solid #d6e9c6;
    color: #3c763d;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.newsletter-error-message {
    background-color: #f2dede;
    border: 1px solid #ebccd1;
    color: #a94442;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}