Need help with react calculator project

I’ve been on this project for a full month! I managed to finish 12/16 requirements but I cant seem to finish the final 4, if you can take a look at my pen
any help is welcome

The first I consider checking is that you’re putting the input values inside the div containing the id of display
When I looked at your code, you had two separate displays for inputs and product after calculation. By adding the input into the div with display that will solve that particular test.