It was quite challenging to solve this issue, but here it is: https://codepen.io/zircle/pen/QwbJJYj

Probably I will use this function to handle pseudos (#55 ) and avoid duplicating similar logic.

Originally posted by @tinchox5 in #57

It would be great to use the logic of inlineBackgroundImage() in inlinePseudoElements() and preCache() to avoid duplication