Re: [csswg-drafts] [css-containment] Clarify "must be" statements

I've created a pull request (#831) to address this. Feedback welcome.

-- 
GitHub Notification of comment by frivoal
Please view or discuss this issue at 
https://github.com/w3c/csswg-drafts/issues/830#issuecomment-268982787 
using your GitHub account

Received on Friday, 23 December 2016 12:25:30 UTC