.post-type-newsletter .wp-list-table th {
    font-weight: 600;
}

.newsletter-archive .newsletter-item {
    margin-bottom: 2rem;
    padding: 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
}

.newsletter-archive .newsletter-thumbnail {
    margin-bottom: 1rem;
}

.newsletter-archive .newsletter-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.newsletter-archive .newsletter-excerpt {
    color: #666;
    line-height: 1.6;
}