When I was using Firefox v59 (codenamed Quantum) at Windows 7, I encountered this skin at any wiki, like MediaWiki, whenever my bandwidth is poor or bad. What skin is that, and is it useful for those with poor or bad bandwidth and those using dial-up?
It's not a skin, just the unstyled HTML. The fact that it is showing that seems like a bug though, as nothing on the page should be displayed until the stylesheet is loaded or failed to load (in which case there would be a significant delay).
"as nothing on the page should be displayed until the stylesheet is loaded"
That's not entirely true. After all requests have finished, successful or otherwise (and maybe even immediately after the CSS request failed), the browser will basically do best effort presentation if I remember correctly.
HTML already has presentation attributes, the browser is able to represent a page even without CSS.
To reply the first question: This is not a skin. This is, in fact, a lack of skin.
