Re: [csswg-drafts] [css-anchor-position-1][css-page-3] Allow custom properties (#9150)

The current reason is that allowing custom properties basically means allowing any property, which may break anchor positioning entirely.

For example:

```
.target {
  position: var(--x);
  --x: absolute;
  position-fallback: --fallbacks;
}

@position-fallback --fallbacks {
  @try { --x: static; }
}
```

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Received on Tuesday, 15 August 2023 00:15:38 UTC