added release note for position-anchor:normal

[dletorey]

Description

• Added Firefox release note for position-anchor:normal;

Motivation

• Working on MDN issues #43867

Related issues and pull requests

• Content PR
• Data PR

[github-actions]

Preview URLs (1 page)

• /en-US/docs/Mozilla/Firefox/Releases/151

Flaws (1)

Found an unexpected or unresolvable flaw? Please report it here.

URL: /en-US/docs/Mozilla/Firefox/Releases/151
Title: Firefox 151 release notes for developers (Beta)
Flaw count: 1

• macros:
  • Macro domxref produces link /en-US/docs/Web/API/HTMLTemplateElement/shadowRootSlotAssignment which doesn't resolve

External URLs (5)

URL: /en-US/docs/Mozilla/Firefox/Releases/151
Title: Firefox 151 release notes for developers (Beta)

• https://bugzil.la/2016929 (1 time) (Note! This may be a new URL 👀)
• https://bugzil.la/2019254 (1 time) (Note! This may be a new URL 👀)
• https://bugzil.la/2024601 (2 times) (Note! This may be a new URL 👀)
• https://bugzil.la/2030351 (1 time) (Note! This may be a new URL 👀)
• https://bugzil.la/2030645 (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2026-05-05 15:46:42)

[pepelsbey]

Looks good! Thank you 🙂

[hamishwillee]

Maybe these?

Suggested change

- The [`@container`](/en-US/docs/Web/CSS/Reference/At-rules/@container) CSS at-rule supports [`style()`](/en-US/docs/Web/CSS/Guides/Containment/Container_size_and_style_queries#container_style_queries) queries. This allows you to check if a container has a valid CSS declaration, a CSS property, or a custom property, and apply styles to its children accordingly. ([Firefox bug 2016929](https://bugzil.la/2016929), ([Firefox bug 2019254](https://bugzil.la/2019254)), ([Firefox bug 2024601](https://bugzil.la/2024601)), [Firefox bug 2030645](https://bugzil.la/2030645)).

- The [`@container`](/en-US/docs/Web/CSS/Reference/At-rules/@container) CSS at-rule supports [`style()`](/en-US/docs/Web/CSS/Guides/Containment/Container_size_and_style_queries#container_style_queries) queries. These allow you to check if a container has a valid CSS declaration, a CSS property, or a custom property, and apply styles to its children accordingly. ([Firefox bug 2016929](https://bugzil.la/2016929), ([Firefox bug 2019254](https://bugzil.la/2019254)), ([Firefox bug 2024601](https://bugzil.la/2024601)), [Firefox bug 2030645](https://bugzil.la/2030645)).