Hi @rajeshdarji, you absolutely can, as well as many other cryptocurrencies; there is an option during checkout to use Steem, so you can use that! Let me know if you run into any issues or feel free to email support@boolean.zendesk.com or admin@boolean.news with any questions! :)
RE: Participate In Our Booleancoin Sale And Earn A Chance To Win 100 STEEM! (ENDS 8/12/2018 AT 11:59:59 PM EST)