How can I modify the DOM element of a sprite?

[NotFenixio]

So, I'm trying to make a blur extension for sprites, and potentially other types of transformations supported in CSS. But, I need to somehow get access to the DOM element of the sprite itself. How can I do this?

[David-Orangemoon]

The sprite is not an element on the DOM. it is a set of triangles drawn by webgl sorry.