Bug: no-invalid-at-rules doesn't recognize margin

[yphoenix]

Environment

ESLint version: v10.8.0
@eslint/css version: 1.4.0
Node version: v26.5.0
npm version: 11.17.0
Operating System: macOS 26.6

Which language are you using?

stylesheet

What did you do?

Configuration

Recommended config

@page
{
	margin: 1in 1in 1in 1in;
}

What did you expect to happen?

no error, margin is completely legal css: https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/At-rules/@page

What actually happened?

 3:2  error  Unknown descriptor 'margin' found for at-rule '@page'  css/no-invalid-at-rules

text.css

Link to Minimal Reproducible Example

See above,

Participation

• I am willing to submit a pull request for this issue.

AI acknowledgment

• I did not use AI to generate this issue report.
• (If the above is not checked) I have reviewed the AI-generated content before submitting.

Additional comments

Willing to look at the code and see if I can fix it.

[DMartens]

The problem seems to be that our data from mdn-data is out-of-date, as it does not specify margin.
So the problem should be fixed in our CSSTree fork.

[eslint-github-bot]

👋 Hi! This issue is being addressed in pull request #524. Thanks, @Pixel998!