WhatsApp Green Badge & API Integration for Business Success body font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; margin: 0; padding: 0; line-height: 1.6; background-color: #f4f4f4; color: #333; .container max-width: 1100px; margin: auto; padding: 20px; background: #fff; h1, h2, h3 color: #075E54;