Problem/Motivation
This from feedback from @effulgentsia here #2801307-54: [META] Support WYSIWYG embedding of media entities:
[...] add CSS along the lines of max-width: 75% on media that's aligned left or right. It's fine for the media to be smaller. It's just that if you're explicitly choosing to align it left or right, then you're choosing to put something else beside it, which means leaving some amount of room for that something else.
Proposed resolution
Add a max-width for the media in CKEditor.
Remaining tasks
TBD
User interface changes
Media added in CKEditor with a left or right alignment will now only use max 75% of the available width.
API changes
None.
Data model changes
None.