[css-grid] Update minmax() description now that fr is invalid as minimum

Hi,

a recent change [1] in the spec makes flex sizes invalid
on the min slot of minmax():
"  <track-size> =
     <track-breadth> |
     minmax( <inflexible-breadth> , <track-breadth> )"

However, the text defining minmax() hasn't been updated [2]:
"As a maximum, a <flex> value sets the track’s flex factor.
 As a minimum, it is treated as zero (or min-content,
 if the grid container is sized under a min-content constraint)."

I believe we should change this to state that as a minimum it makes the
declaration invalid.

WDYT?

Bye,
  Rego

[1]
https://github.com/w3c/csswg-drafts/commit/4040ba7fa068905f7fe1c1bf35d665a2062acafa
[2] https://drafts.csswg.org/css-grid/#valdef-grid-template-columns-minmax

Received on Thursday, 12 May 2016 15:53:15 UTC