How to whitelist iframe from Kotlin playground?

[TheBestPessimist]

This is what i want to embed: Kotlin Playground: Edit, Run, Share Kotlin Code Online

This is the iframe url: <iframe src="https://pl.kotl.in/xrwqnYnxC?theme=darcula"></iframe>

The same iframe url just to see if embed works on meta:

And this is where the URL above redirects me: https://play.kotlinlang.org/embed?short=xrwqnYnxC&theme=darcula

This is what i tried to add, but it doesn’t seem to work:

I have tried adding one or the other of the 2 kotlin links. i have also tried adding both.

[awesomerobot (Kris)]

hmm strange, I’m able to get it to work on my dev instance

are there any errors in the console when you’re trying to view the topic with the iframe?

[TheBestPessimist]

it seems to be working today

so idk what might have happened.

Second question: is there a way to make that box more beautiful? it this something from the iframe, or something from discourse?