On 03/25/2015 04:03 PM, Tab Atkins Jr. wrote: > The behavior falls out of the placement definitions. The abspos has > one line for its placement - its column-start is 2. Its default span > is 1, per spec, so its column-end gets computed to 3. I think it's a bit trickier than that. For a normal grid item, "grid-column: 2 / auto" would indeed give us a span of 1. But I don't think that's true of an abspos item -- there, the spec says: # "auto" [...] contributes the corresponding # padding edge of the grid container as a line. http://dev.w3.org/csswg/css-grid/#abspos-items So the spec says this item's containing block starts at grid-line 2, and ends at the right edge of the grid container's padding-box. So, its containing block has a negative width. ~DanielReceived on Thursday, 26 March 2015 00:14:29 UTC
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