Move your mouse, and watch the window follow it around the screen! Enable "Resize Mode" to see realtime resizing of the window. Enable "Frame Only" mode to get a better idea of how the window is rendered. Click "See inside" to see how it works.
This window was designed by looks only; no close-up measurements of pixels were made, however my current OS is Windows 8.1 which gave me a reference of sorts. I hope to be able to develop this further, possibly making a full Windows simulator in Scratch!