CMS - Embedded tweet - Width overflows on mobile

Thanks @Fonsume but I’ve tried doing this with no success.
Seems I can’t style an HTML embed inside a rich text editor via the webflow pannels.
Am I missing something?
I see the same issue in this question:

Here’s what I’m seeing when I unbind the RTE from the CMS collection, and add an HTML Embed.
The selector field is not editable and there are no styling panels in right panel: