Need help integrating code wrote on Edittext to the Discourse

Thank you so much for responding.

I tried that. I created a new theme component and then by using edit CSS/HTML option, I inserted that code in common>header section. I can see the timer on the website but the problem is that the timer doesn’t play. It has play and stop button, locally it works fine but on the website it only shows the timer but no functioning.


I also checked console, using inspect and this is the error that it shows.