I want to create a webapp.

I want to create a webapp where the user will be able to enter a list of questions, and subsequently these questions will be presented to them in a random order with a countdown timer.

So for the question entry section, I want it to be similar to this: https://www.textfixer.com/tools/random-choice.php.

Also, the user should be able to select the duration of the question in this section, perhaps with a slider (0mins - 3 mins, in 30 seconds increments).

And for the question display section I want it to be similar to this: https://jamescun.github.io/iPG/ . Where after the timer runs out, a message saying "Too slow, make your answer more concise!" comes up. I would like to keep the same key controls, so 'Return' button to get the next question and 'Space' button to restart the timer. Helpfully the author of this page has uploaded their code to github here: https://github.com/jamescun/iPG

Thank you!