Mozilla Bug 511909

default style
This line should be pink
This line should be green
This line should be blue
@-moz-document {...}
This line should be pink
@media screen {...}
This line should be green
@-moz-document {
   @media screen {...}
}
This line should be blue
@media print {
  @-moz-document regexp("not_this_url"),}
    #mx {
        color: pink;
    }
  }
}
This line should be pink
@-moz-document regexp("not_this_url"){
  @media print ,}
    #mxx {
      color: blue;
    }
  }
}
This line should be blue
@media screen {
  @-moz-documen {...}
}
This line should be green
@media screen {
  @-moz-document {
    @media screen {...}
  }
}
This line should be blue