Let me explain you first the solutions I know.
I know about this: How do I give text or an image a transparent background using CSS?
I know it is posible to simulate the effect using the
:after
element and animating its opacity.I know that today, firefox can transition between 2 background images. (no other browser does this, as far as I know).
My question here is, is there or is planed to be in the future, a method to animate the opacity of a background image or to transition one into another. Some method that will be in a spec and that will be implemented by all browsers?