Re: [csswg-drafts] [CSS2] Clarify margin collapsing behavior (#11306)

The "relevant part" of the spec you’re alluding to says nothing about "collapse-through," and even if it did, I’ve already wasted my time proving that it doesn’t have the effect you claim. In particular, regarding my example:

I [wrote](https://github.com/w3c/csswg-drafts/issues/11306#issuecomment-2513850336):

> No, the `margin-bottom: 120px` of the first div does not collapse through the combined `margin-top: 60px` of `div.collapsed` when it collapses with the `margin-top: 10px` of the third div.

To which you [responded](https://github.com/w3c/csswg-drafts/issues/11306#issuecomment-2514604158):

> I haven’t said that. `div.collapsed` allows margins to collapse through it. And the `margin-bottom: 120px` and `margin-top: 10px` definitely collapse.

Not true! Apparently, you sent me on a wild goose chase. 

@gitspeaks [asked](https://github.com/w3c/csswg-drafts/issues/11306#issuecomment-2511235623):

> My question is whether the first div’s `margin-bottom: 120px` collapses with the third div’s `margin-top: 10px` by collapsing through the combined margin of `div.collapsed`. **In other words, is it correct to say that the first div’s `margin-bottom: 120px` passes through (or collapses through) the combined `margin-top: 60px` of `div.collapsed` when it collapses with the third div’s `margin-top: 10px`**, or does the term "collapses through" refer only to the scenario where the margins of `div.collapsed` combine into a single margin, independent of the margins of its sibling elements?

To which you [responded](https://github.com/w3c/csswg-drafts/issues/11306#issuecomment-2511316340):

> This is all transitive, so I would say yes: when the top and bottom margins of `div.collapsed` collapse through, the respective adjoining margins also collapse through that element. Because all the adjoining margins are collapsing together.

Look, I might not fully grasp your "intimate" understanding of what "collapse-through" means, but I do know how to follow reasoning— and here’s a clear example of you contradicting yourself.

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Received on Tuesday, 3 December 2024 19:03:18 UTC