slider images
https://pixabay.com/en/colleagues-business-lecture-437019/
https://pixabay.com/en/business-card-credit-debit-female-15721/
https://pixabay.com/en/euro-bill-currency-ball-about-447209/

responsive image
https://pixabay.com/en/apple-monitor-desk-imac-office-407122/