How to build a online store by html

Question

how??

Answer 1

A simple way to do this is by using FireBase and PHP. FireBase is a free cloud database service provided by Google. You will find many code examples of online store with minimal PHP. Things will become more complicated as you improve the CSS and add more functionality such as credit card payments which will require some sort of a certificate and order tracking which will require another server based app for the logistics. Bottom Line...its not easy
:D

Answer 2

html wouldn't suffice for this endeavour, aside from the other frontend languages for the user interface (css, java script), you would also need some backend tools(php or python) to manage the servers storing user data, logins, payments etc.