Re: [csswg-drafts] [css-grid-3][masonry] Baseline alignment in the masonry axis (#9530)

The CSS Working Group just discussed `[css-grid-3][masonry] Baseline alignment in the masonry axis`, and agreed to the following:

* `RESOLVED: Take the baseline only from first/last item in tracks`

<details><summary>The full IRC log of that discussion</summary>
&lt;ydaniv> TabAtkins: we talked about where to determine first and last baselines<br>
&lt;ydaniv> ... simple answer is first baseline comes from heighest among the first tracks<br>
&lt;fantasai> miriam, see https://excalidraw.com/#json=t57WAAEA-yTnMkdIQJJEI,cfGMkDWWlUwvkzGIH9lrCA<br>
&lt;TabAtkins> last baseline comes from the lowest baseline among the last items in each track<br>
&lt;ydaniv> fantasai: we want to clarify that the last baseline will be the lowest baseline<br>
&lt;alisonmaher> q+<br>
&lt;ydaniv> ... we agreed to look at the last item in each column for the last baseline, and we want to double check with the group<br>
&lt;astearns> +1<br>
&lt;fantasai> wanted to clarify that it will be from the last item, not from an earlier item<br>
&lt;dholbert> that makes sense to me!<br>
&lt;ydaniv> almaher: I think we want to be consistent with multicol<br>
&lt;ydaniv> fantasai: we believe we need the same clarification in multicol<br>
&lt;ydaniv> ... I think you'd expect the last one<br>
&lt;ydaniv> almaher: I think that makes sense<br>
&lt;ydaniv> astearns: so in multicol it can be positioned by the last baseline<br>
&lt;ydaniv> fantasai: yes, I think people won't do it but yes<br>
&lt;castastrophe> Thanks for the visual fantasai, super helpful<br>
&lt;ydaniv> fantasai: when checking for the heighest and lowest we only check for first and last tracks<br>
&lt;ydaniv> ... this distinction was not in original resolution<br>
&lt;ydaniv> ... this is what we assumed, so need to add to the spec<br>
&lt;ydaniv> astearns: I said we want this to be explicit<br>
&lt;fantasai> RESOLVED: Take the baseline only from first/last item in tracks<br>
&lt;ydaniv> astearns: assuming there were no objections?<br>
</details>


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Received on Wednesday, 1 October 2025 15:37:21 UTC