Clojurians Log v2

Hi! It seems, the paged media CSS contains specific like these nested rules:

@page {
  size: A4;
  margin: 10%;

  @bottom-right-corner {
    content: "Page " counter(page);
  }
} 

I suppose Garden by default doesn't support this syntax. Any pointer on how can I extend and/or build with built in helpers to get this result please?