[Mapcss] Stacked rules question

[Sebastian Spaeth]

On 2010-07-07, Sebastian Klein wrote:

> >     way[highway=footway] { z-index: 5; width: 1; color: green; }
> >     way[highway=footway]::highlight  { width: 3; z-index: 2; }
> >     way[highway=footway]::centreline { width: 2; z-index: 3; }

OK, so what does this do? 2 strokes, one at z2 and one at z3? Or 3
strokes with the third at z5? (I presume 2 strokes is what we intent
here)

But then, subparts become kind of obligatory and
   way[highway=footway] { z-index: 5; width: 1; color: green; }
this by itself wouldn't stroke anything?

Sebastian
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