[webvtt] Pull Request: Editorial: Clarify CSS escapes in an example

zcorpan has just submitted a new pull request for https://github.com/w3c/webvtt:

== Editorial: Clarify CSS escapes in an example ==
Fixes #352.

See https://github.com/w3c/webvtt/pull/356

Received on Thursday, 17 August 2017 10:30:27 UTC