CSS Displaying in-article in Firefox and Edge

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Whilst viewing this article today in Mozilla Firefox 112.0.2 or Microsoft Edge Version 112.0.1722.68 I am seeing CSS display in this article only in the info box (see here). It does not appear to be in the source of the article and I'm not familiar enough with Wikipedia's technical implementation to know why. Thought I would call it out, however. Axcien (talk) 21:49, 5 May 2023 (UTC)Reply