* 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