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added exprimental note about from keyword #33536

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May 13, 2024
Merged

added exprimental note about from keyword #33536

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added exprimental note about from keyword
dletorey May 10, 2024
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Merge branch 'main' into 33082-from-keyword
dletorey May 13, 2024
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41 changes: 41 additions & 0 deletions files/en-us/mozilla/firefox/experimental_features/index.md
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Expand Up @@ -233,6 +233,47 @@ Note:
- The {{domxref("Element.checkVisibility()")}} `options` object parameter now takes the property `contentVisibilityAuto`, which can be set `true` to test if the element has `content-visibility: auto` set and is currently skipping rendering its content (the `options` object also takes new values `opacityProperty` and `visibilityProperty` but these are not related to `content-visibility`).
(See [Firefox bug 1859852](https://bugzil.la/1859852) for more details).

### from keyword for relative colors

The `from` keyword is now parsed by firefox, behind a flag, this allows the work for [relative colors](/en-US/docs/Web/CSS/CSS_colors/Relative_colors) to proceed.
Currently this has no effect, but with out this the relative colors work can not proceed. (See [Firefox bug 1889133](https://bugzil.la/1889133) for more details.)
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What do you think about this?

Suggested change
The `from` keyword is now parsed by firefox, behind a flag, this allows the work for [relative colors](/en-US/docs/Web/CSS/CSS_colors/Relative_colors) to proceed.
Currently this has no effect, but with out this the relative colors work can not proceed. (See [Firefox bug 1889133](https://bugzil.la/1889133) for more details.)
The `from` keyword is now parsed as valid CSS syntax when the `layout.css.relative-color-syntax.enabled` preference is set to `true`.
This keyword currently has no effect but will not produce syntax errors when used in valid places in CSS color functions, allowing the work for [relative colors](/en-US/docs/Web/CSS/CSS_colors/Relative_colors) to proceed.
See [Firefox bug 1889133](https://bugzil.la/1889133) for more details.


<table>
<thead>
<tr>
<th>Release channel</th>
<th>Version added</th>
<th>Enabled by default?</th>
</tr>
</thead>
<tbody>
<tr>
<th>Nightly</th>
<td>126</td>
<td>No</td>
</tr>
<tr>
<th>Developer Edition</th>
<td>126</td>
<td>No</td>
</tr>
<tr>
<th>Beta</th>
<td>126</td>
<td>No</td>
</tr>
<tr>
<th>Release</th>
<td>126</td>
<td>No</td>
</tr>
<tr>
<th>Preference name</th>
<td colspan="2"><code>layout.css.relative-color-syntax.enabled</code></td>
</tr>
</tbody>
</table>

### Single numbers as aspect ratio in media queries

Support for using a single {{cssxref("number")}} as a {{cssxref("ratio")}} when specifying the aspect ratio for a [media query](/en-US/docs/Web/CSS/CSS_media_queries). (See [Firefox bug 1565562](https://bugzil.la/1565562) for more details.)
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