HTML parody of an OS which was popular when we were young and Internet was new.
It's the first time I got to know about something like this, but looks like this stuff existed for some time: a website mimicking Windows OS.
Also it was fun to see "name fails" in "P()rn" section in Cat Explorer (Internet browser).
Source: tjournal.ru(rus) via meduza.io(rus).
Same article in Russian.