Flex 3 background image

Lesson: When using an embedded image to skin a canvas using 9-slice scaling and CSS within Flex 3, don’t forget to set the background-size property!

I was skinning a Canvas component in my Flex 3 app and while the image was showing up, it wasn’t filling the Canvas correctly — it was just displaying at its native size. I set my scale-nine parameters (scaleGridTop, et. al.) and still no change. Then I found this Adobe article mentioning the background-size property. Oops.