This text is contained within the body element. The box above this one is the head element, and it contains the title, meta, and style elements. They have all been revealed via CSS. Keen, eh? Notice that the meta element does not have content due to its being an "empty" element, but is still drawn thanks to the border and padding values assigned to it.

(Original idea swiped from someone I can't remember, and whose test file I can't find now, but it was they who came up with this first, not me.)