Can I sell my own custom template design on platforms other than Webflow?

Hello, I want to be a Webflow template designer, I received positive answers from my applications. But I want to learn something before publishing my first template.

I designed a Template (Portfolio) and coded it in Webflow and offered it for sale. Can I code the same template design (Portfolio) in other platforms such as Framer, Shopify or WordPress and sell it there? Or is there a copyright that can prevent this?

It doesn’t make much sense to sell only on Webflow. Thanks in advance for your help.