> let corpus = document.body; undefined > corpus onmozfullscreenchange is deprecated. explore.html onmozfullscreenerror is deprecated. explore.html > corpus.style.color = "darkgreen"; "darkgreen" > let headline = document.getElementsByTagName("h2")[0] undefined > headline

> headline.style.textAlign = "right"; "right" > headline.style.display = "none" "none" > headline.style.display = "block" "block" > corpus.style.backgroundColor = "darkblue" "darkblue" > corpus.style.backgroundColor = "lightyellow" "lightyellow" > typeof headline "object"