Check tailwind compatibility with mkdocs material

[surchs]

#199 may have been a bit too successful:

• it overrides the mkdocs material stylesheet on all pages, not just the main/home page
• it interferes with visual elements from mkdocs:

Tailwind on:

Tailwind off:

It also makes ordered lists completely invisible:

Tailwind on:

Tailwind off:

and possibly other things we haven't noticed yet.

We should investigate:

• If we can apply tailwind only to the overrides html page and not use it as a mkdocs stylesheet extension directly
• If we have to revert back to using tailwind from the CDN

[github-actions]

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