This is assurely a stupid question, but i'm searching and i don't found any good examples.
I'm looking for the right place to write my css, to be include in 'sencha app build'. (especially iconCls css)
It seems that must be include in sass folder, but to be processed, must i respect a specific format (css, scss etc ?), must i declare it in one of many config file (app.json, sencha.cfg etc...)
For the moment i'm adding extra CSS line after the build in index.html.