Nitrogen, Erbium, and Dysprosium elements spelling NERDY HD Wallpaper

Three squares representing elements from the periodic table are displayed against a black background. The first square contains the letter 'N' for Nitrogen in green. The second square contains 'Er' for Erbium in blue. The third square contains 'Dy' for Dysprosium in red. The word 'NERDY' is formed by the symbols.