Re: [csswg-drafts] [css-multicol] Containing block of column spanners (#5612)

> Firefox seems to only make the spanner a containing block for absolute/fixed positioned descendants if there's an ancestor inside column content that establishes a containing block for absolute/fixed positioned descendants.

I can confirm this is Firefox's current behavior. It behaves like Option 3 under above condition to prevent a spanner's absolute/fixed positioned descendants from being parented under an ancestor absolute/fixed container which is laid out into the columns. 

Option 3 is much easier to implement than Option 2 in Gecko.

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Received on Wednesday, 14 October 2020 03:35:12 UTC