added comment about deprecation of extend inside media query
added comment about deprecation of extend inside media query

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ork_foundation_master,hummingbird-me/foundation-sites-6,zurb/foundation-sites,aoimedia/foundation,r14r-work/fork_foundation_master,andycochran/foundation-sites,pwnall/foundation-sites,glunco/foundation,mbarlock/foundation,Owlbertz/foundation,Iamronan/foundation,walbo/foundation,JihemC/Foundation-Demo,natewiebe13/foundation-sites,glunco/foundation,mbencharrada/foundation,r14r-work/fork_foundation_master,Owlbertz/foundation,stanwmusic/foundation,carey/foundation,birthdayalex/foundation,gnepal7/foundation,PassKitInc/foundation-sites,brettsmason/foundation-sites,lizzwestman/foundation,elkingtonmcb/foundation,ucla/foundation-sites,yohio/foundation-sites-6,signal/foundation,denisahac/foundation-sites,themccallister/foundation,zurb/foundation-sites,RichardLee1978/foundation,elkingtonmcb/foundation,joe-watkins/foundation,adstyles/foundation,getoutfitted/reaction-foundation-theme,DaSchTour/foundation-sites,DaSchTour/foundation-sites,jlegendary/foundation,sethkane/foundation-sites,dimamedia/foundation-6-sites-simple-scss-and-js,0111001101111010/foundation,Teino1978-Corp/Teino1978-Corp-foundation,socketz/foundation-multilevel-offcanvas,NikhilKalige/foundation,wikieswan/foundation,dragthor/foundation-sites,jlegendary/foundation,lizzwestman/foundation,karland/foundation-sites,hboers/foundation,dsandstrom/foundation,birthdayalex/foundation,jamesstoneco/foundation-sites,youprofit/foundation,themccallister/foundation,sitexa/foundation,mbarlock/foundation,samuelmc/foundation-sites,sashaegorov/foundation-sites,zurb/foundation-sites-6,lizzwestman/foundation,oller/foundation,youprofit/foundation,jamesstoneco/foundation-sites,a-dg/foundation,glunco/foundation,colin-marshall/foundation-sites,Owlbertz/foundation,dragthor/foundation-sites,gnepal7/foundation,ibroadfo/foundation,marcosvicente/foundation,pwnall/foundation-sites,signal/foundation,Teino1978-Corp/Teino1978-Corp-foundation,barnyp/foundation,barnyp/foundation,r14r/fork_foundation_master,MarcGuay/foundation,ucla/foundation-sites,advisorwebsites/foundation-sites-6,r14r-work/fork_foundation_master,mbarlock/foundation,jeromelebleu/foundation-sites,wikieswan/foundation,anbestephen/foundation,Teino1978-Corp/Teino1978-Corp-foundation,ioanok/foundation,vrkansagara/foundation,andycochran/foundation-sites,designerno1/foundation-sites,NikhilKalige/foundation,NeonWilderness/foundation,adstyles/foundation,jamesstoneco/foundation-sites,pdeffendol/foundation,jaylensoeur/foundation-sites-6,PassKitInc/foundation-sites,designerno1/foundation-sites,joe-watkins/foundation,youprofit/foundation,ibroadfo/foundation,claytonrodgers/foundation,Klaudit/foundation