Setting properly the height for iframes

[Nxtivision]

Is your feature request related to a problem? Please describe
I'm always frustrated when it comes to use stories inside a MDX file.

Just before the Iframe, there is a Div set to height: 100px. Well, when the story is rendered, we have this ugly scrollbar:

Describe the solution you'd like
Why don't we change this height to min-height ? I already tried this and it seems more interesting to use as it will always (I think) fit the content of the iframe. What do you think? 😄

Are you able to assist to bring the feature to reality?
Yes, if I can find where it is set in the code
Edit: I tried to update the project via git but it seems there is a problem from me, so I can't help directly 😢