fix transform origin during scaling

src/runtime/transition/index.ts

@@ -202,6 +202,7 @@ export function crossfade({ fallback, ...defaults }: CrossfadeParams & {
 			easing,
 			css: (t, u) => `
 				opacity: ${t * opacity};
+				transform-origin: top left;
 				transform: ${transform} translate(${u * dx}px,${u * dy}px) scale(${t + (1-t) * dw}, ${t + (1-t) * dh});
 			`
 		};