Animate native lazy load image (loading='“lazy”)

Currently, images with the attribute loading="lazy" (https://web.dev/native-lazy-loading/) are displayed immediately when loaded, i.e. without fade-in effect.

Is there a way to animate images with the loading="lazy" attribute when they are loaded and preferably without JavaScript?

I know, there are many lazyloading JavaScript libraries, but just because loading is now done natively by the browser, the handling via JavaScript feels like a step back again.