[csswg-drafts] [css-grid-2] Aspect ratio and the row axis (#12964)

alisonmaher has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-grid-2] Aspect ratio and the row axis ==
In the following test case:

```
<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-grid-1/#auto-repeat">
<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
<meta name="assert" content="Checks that the min-height is reflected through the aspect-ratio for determining auto repeat tracks.">
<p>Test passes if there is a filled green square.</p>
<div style="display: inline-grid; background: green; aspect-ratio: 1/1; min-height: 60px; grid-template-rows: repeat(auto-fill, 50px);"></div>
```

All browsers appear to render a 60x60 green square, as opposed to 100x100. In order to hit the `min-height`, though, you'd expect to produce 2 50px rows.

<img width="240" height="103" alt="Image" src="https://github.com/user-attachments/assets/fd87bd24-09c8-4500-accb-c223aa09257b" />

In the column direction, however, this works as expected, and 2 50px columns are produced, resulting in a 100x100 square:
```
<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-grid-1/#auto-repeat">
<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
<meta name="assert" content="Checks that the min-height is reflected through the aspect-ratio for determining auto repeat tracks.">
<p>Test passes if there is a filled green square.</p>
<div style="display: inline-grid; background: green; aspect-ratio: 1/1; min-height: 60px; grid-template-columns: repeat(auto-fill, 50px);"></div>
```

<img width="241" height="128" alt="Image" src="https://github.com/user-attachments/assets/ebc6ef2f-da26-415b-a7fc-7f25567e0a5b" />

Is this expected to only work in the column direction? (Same question applies for masonry)

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/12964 using your GitHub account


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Received on Thursday, 16 October 2025 22:06:11 UTC