Fade in after lazy load possible?

[silly.berlin]

Heyhey,
I wonder, how to fade in my thumbs after loading. silly.berlin Is that solvable with CSS only by addressing the right classes? Which would that be? "ls-is-cached", "lazyloaded" or "loaded"...
Thank you :)

[Richard]

Dear @silly-berlin

Am i correct that you could target the thumbs directly?

Each thumbnail has a class ".thumbnail-wrap"

And inside a class ".thumb"

Could you target those?

Best :)
Richard