3.1 wasn’t a flat UI as the shading represented light coming from the top left on a 3D button, windows 2 used a flat design. https://www.custompc.com/wp-conten

3.1 wasn’t a flat UI as the shading represented light coming from the top left on a 3D button, windows 2 used a flat design. https://www.custompc.com/wp-content/sites/custompc/2023/06/Windows-31-Multimedia-Drivers.jpg https://www.custompc.com/wp-content/sites/custompc/2023/06/W...