How to relocate the right column (tags / attachments area) in messages?

Hello!

I'd like to relocate the tags / attachments area in messages to the bottom of a message rather than the right side - that way, it won't take up space in the event that there aren't any tags or attachments. 

I've seen this done on a few communities:

• Alteryx Community - for example: https://community.alteryx.com/t5/Setup-Configuration/My-workflow-balloons-from-a-3-MB-to-53-GB/td-p/143991
• Optimizely community: https://community.optimizely.com/t5/Using-Optimizely/Get-your-Optimizely-raw-event-data-quickly-and-easily/m-p/17237#M6446 (though they have a rather custom layout on Topic pages in general)
• Spotify community: https://community.spotify.com/t5/Music-Chat/Top-Songs-of-2017-Playlist/m-p/3772559

I'd actually be happy to remove the tagging / attachments functionality completely if that would help my layout issues. Our community members don't really tag, and most of them don't have permission to add attachments.

Any suggestions for me? Happy to tweak layouts / components in Studio or adjust CSS as needed.

Thanks!