Initial import of Template:xref_cssinitial
Initial import of Template:xref_cssinitial

https://developer.mozilla.org/en-US/docs/Template:xref_cssinitial

Contributors (by MDN username):
* BychekRU
* lmorchard
* Marsf
* Netaras
* Nukeador
* Sebastianz
* SJW
* teoli
* ziyunfei

jpmedley/kumascript,a2sheppy/kumascript,a2sheppy/kumascript,jpmedley/kumascript