canvas = {
const ct = DOM.context2d(WIDTH, HEIGHT);
ct.canvas.ct = ct;
const s = ct.canvas.style;
s.margin = `0 ${(width - WIDTH) / 2}px`;
s.border = "1px solid #333";
ct.setTransform(1,0,0,1, WIDTH, HEIGHT);
ct.strokeStyle = "white";
ct.lineWidth = 2;
ct.drawImage(cat, -200, -200);
return ct.canvas;
}