Description

The CSS rotate proprerty used for LTR/LTR elements positionning (https://github.com/search?q=repo%3AWordPress%2Fgutenberg+rotate%3A+&type=code) is deprecated by the W3C validator and show an error :

Error: CSS: rotate: Property rotate doesn't exist.

Step-by-step reproduction instructions

1. Go to https://validator.w3.org/
2. Paste an URL of a website made with WordPress
3. See in the results the error "Error: CSS: rotate: Property rotate doesn't exist"

Screenshots, screen recording, code snippet

No response

Environment info

• WordPress 6.7.2
• Twenty Twenty-Five Version: 1.1

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure