The world's first website is still online.
Why it is true
The first website was created by Tim Berners-Lee at CERN in 1991 to explain what the World Wide Web was. The page can still be visited on CERN's servers and describes how to use the browser and create pages.
Source: CERN
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.