added release note for base-select value for appearance property

[dletorey]

Description

• Added base-select value for appearance CSS Property to Firefox Experimental Features
• Added experimental note to Firefox 149 for - base-select value for appearance CSS Property

Motivation

• Working on MDN issue #44299

Related issues and pull requests

• BCD PR

[github-actions]

Preview URLs (2 pages)

• /en-US/docs/Mozilla/Firefox/Experimental_features
• /en-US/docs/Mozilla/Firefox/Releases/149

External URLs (2)

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox

• https://bugzil.la/1974787 (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Mozilla/Firefox/Releases/149
Title: Firefox 149 release notes for developers

• https://bugzil.la/1974787 (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2026-06-16 14:04:18)

[pepelsbey]

Looks good! Thank you 🙂

The only thing that tripped me a little was "(not yet supported)" as it's difficult to tell what exactly is not supported: element, pseudo-element, styling one or both of them? It's not critical, but it could be cleared up a bit.

[dletorey]

Looks good! Thank you 🙂

The only thing that tripped me a little was "(not yet supported)" as it's difficult to tell what exactly is not supported: element, pseudo-element, styling one or both of them? It's not critical, but it could be cleared up a bit.

I have made this clearer and moved it from 152 to 149

[pepelsbey]

Looks good! Thank you 🙂

I would only slightly change the wording.