I would like to go into the career of selling website templates. However, as we know there are some websites that are haram. For example, if I sell a store template in which it makes it easier for the consumer to sell their products they may use it to sell halal items and haram items. Am I guilty if the person uses the website template for a haram purpose?
Also, another question, if I would like to sell extravagant items such as new shoe releases and GPU's would that be haram if someone buys it from me. I just don't want any blame on the day of judgment. Thank you for your time