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[Bug 12812] New: [WebVTT]: need to specify default CSS unit when not percentag

From: <bugzilla@jessica.w3.org>
Date: Mon, 30 May 2011 00:21:39 +0000
To: public-html-bugzilla@w3.org
Message-ID: <bug-12812-2486@http.www.w3.org/Bugs/Public/>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=12812

           Summary: [WebVTT]: need to specify default CSS unit when not
                    percentag
           Product: HTML WG
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: other Hixie drafts (editor: Ian Hickson)
        AssignedTo: ian@hixie.ch
        ReportedBy: silviapfeiffer1@gmail.com
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org


In WebVTT we have cue setting such as the text size "S:" and line position
"L:", which can be specified either with a percentage value or an integer
without a unit specification. This means that a specification such as "S:55"
could be interpreted either as em or px. IIUC, "px" is meant to be the default
CSS unit to interpret the value as, but it's not clear from the spec. Another
developer that read the spec thought it was "em".

I think we should specify what CSS unit the value is to be interpreted as in
the CSS properties section:
http://www.whatwg.org/specs/web-apps/current-work/webvtt.html#applying-css-properties-to-webvtt-node-objects

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Received on Monday, 30 May 2011 00:21:41 UTC

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