Update support notices for prefers-reduced-data

[Rebaka8]

Description

Updated the support notices on the prefers-reduced-data page.

Motivation

The page already includes browser compatibility information and support indicators. This change removes redundant support notices and updates the top notice to a warning as suggested in the issue discussion.

Additional details

• Changed the top support note to a warning.
• Removed the support note from the Examples section.
• Left the explanatory text in the User preferences section unchanged.

Related issues and pull requests

Fixes #44396

[github-actions]

Preview URLs (1 page)

• /en-US/docs/Web/CSS/Reference/At-rules/@media/prefers-reduced-data

External URLs (1)

URL: /en-US/docs/Web/CSS/Reference/At-rules/@media/prefers-reduced-data
Title: prefers-reduced-data CSS media feature

• https://css-tricks.com/snippets/css/system-font-stack/ (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2026-06-16 12:15:16)

[chrisdavidmills]

@Rebaka8, this looks pretty reasonable so far. Thanks for your work on this.

I've just got one comment for you.

[Rebaka8]

Thanks for the feedback. I've updated the wording to remove references to browser support status and applied the suggested change.

[chrisdavidmills]

I'm not about that last fix; see my comment below.

[chrisdavidmills]

So this change has introduced a typo ("at at"), but I also have a bigger issue. I can see what Estelle wants to achieve here (cutting down future maintenance is always good), but now that the browser support mention has been removed, this section reads weirdly, and doesn't flow with the rest of the page. I get to it and think, "Why is this here? How does this help?"

The lack of browser support mention is OK, as that is covered in the warning at the top, but I'd like to suggest that we remove the "User preferences" section altogether, and instead include a sentence in a new paragraph just below the first (intro) that says something like

The browser typically achieves this by querying the underlying operating system's preferences for reduced data.

Thoughts, @estelle?

[estelle]

that works for me

[chrisdavidmills]

OK, I've made a few further fixes on the page, and now I think this is ready to go. Thanks all!