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[scottcheng]

• please tag the issue title with the spec's shortname, like [css-foo]
  (this is the name from the spec URL, without a level number unless the issue is specific to that level).
  If you're proposing a new feature that doesn't obviously fit in an existing spec, skip this part — don't make something up.

• please be specific (in the title and issue) about what you want to change:
  “make it better” means different things to different people!

• please link to the spec section you're talking about, or at least the spec