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added FF release note for link-parameters and param() #44851

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pepelsbey merged 3 commits into from
Jul 20, 2026
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added FF release note for link-parameters and param() #44851

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fb52406
added FF release note for link-parameters and param()
dletorey Jul 20, 2026
3521a0a
Merge branch 'main' into 44466-link-parameters-ff-release
dletorey Jul 20, 2026
565b322
Update files/en-us/mozilla/firefox/releases/153/index.md
dletorey Jul 20, 2026
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14 changes: 14 additions & 0 deletions files/en-us/mozilla/firefox/experimental_features/index.md
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Expand Up @@ -421,6 +421,20 @@ The {{cssxref("sibling-count")}} and {{cssxref("sibling-index")}} function are n
- `layout.css.tree-counting-functions.enabled`
- : Set to `true` to enable.

### Updating attributes of external recourses

The {{cssxref("link-parameters")}} CSS property and {{cssxref("param")}} CSS function are now supported. This allows the user to update attributes of external resources, such as SVGs, that have their attributes set with the {{cssxref("env")}} CSS function. This means that single external resource can be used rather than creating multiple variations that only have different colors or other values. ([Firefox bug 2046153](https://bugzil.la/2046153)).

| Release channel | Version added | Enabled by default? |
| ----------------- | ------------- | ------------------- |
| Nightly | 154 | Yes |
| Developer Edition | 153 | No |
| Beta | 153 | No |
| Release | 153 | No |

- `layout.css.link-parameters.enabled`
- : Set to `true` to enable.

## SVG

**No experimental features in this release cycle.**
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4 changes: 4 additions & 0 deletions files/en-us/mozilla/firefox/releases/153/index.md
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Expand Up @@ -159,6 +159,10 @@ You can find more such features on the [Experimental features](/en-US/docs/Mozil
The {{cssxref("sibling-count")}} and {{cssxref("sibling-index")}} function are now supported. The `sibling-count()` function returns the number sibling elements as well as the element itself. The `sibling-index()` function returns the index number of the element in relation to its siblings, this starts from `1` and not `0`.
([Firefox bug 2042063](https://bugzil.la/2042063)).

- **Updating attributes of external recourses**: `layout.css.link-parameters.enabled`

The {{cssxref("link-parameters")}} CSS property and {{cssxref("param")}} CSS function are now supported. This allows the user to update attributes of external resources, such as SVGs, that have their attributes set with the {{cssxref("env")}} CSS function. This means that single external resource can be used rather than creating multiple variations that only have different colors or other values. ([Firefox bug 2046153](https://bugzil.la/2046153)).

- **CSS basic shapes allow `farthest-corner` and `closest-corner` keywords** (Nightly): `layout.css.ellipse-corners.enabled`
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dletorey marked this conversation as resolved.

The `farthest-corner` and `closest-corner` keywords can now be used for specifying the radii values of the [`ellipse()`](/en-US/docs/Web/CSS/Reference/Values/basic-shape/ellipse) and [`circle()`](/en-US/docs/Web/CSS/Reference/Values/basic-shape/circle) CSS basic shapes.
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