./dmg_cpu_b/*.kicad_sch KiCad schematic sheets. ./dmg_cpu_b/lib/DMG_CPU_Cells.kicad_sym KiCad library with symbols for all the logic cells in the chip. ./dmg_cpu_b ...

We need the original picture to be behind the overlay so we’re making it a background image using the CSS property ‘background’. The PNG overlay is then set as the new SRC for the IMG element.