[data-shapes] Fix build errors due to invalid CSS (#614)

HolgerKnublauch has just created a new issue for https://github.com/w3c/data-shapes:

== Fix build errors due to invalid CSS ==
See https://github.com/w3c/data-shapes/actions/runs/18511032788/job/52751744800

```
    "file:/home/runner/work/data-shapes/data-shapes.w3c/shacl12-core/index.html":6165.5-6165.72: error: CSS: “background”: “light-dark(#f3f3f3,#2b2b2b)” is not a “background-color” value.
    "file:/home/runner/work/data-shapes/data-shapes.w3c/shacl12-core/index.html":6166.6-6166.72: error: CSS: “color”: “#0000a0” is not a “color” value.
    "file:/home/runner/work/data-shapes/data-shapes.w3c/shacl12-core/index.html":6177.6-6177.90: error: CSS: “color”: “#0000a0” is not a “color” value.
```


Please view or discuss this issue at https://github.com/w3c/data-shapes/issues/614 using your GitHub account


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Received on Wednesday, 15 October 2025 00:25:51 UTC