w3c/webvtt — pull request #79 by foolip (2014-06-03 07:43:39+00:00)
Title: Remove weird properties on the WebVTT cue background box

These were added in commits 3d05e2e05c72b01404cf290bf07c7f0f367827a7 and
be09934775d380753873ab9667c70e1b3af43aa3 but don't make sense since the
WebVTT cue background box is a per-cue inline box.