@scope (.light-scheme) {
  :scope {
    background-color: plum;
  }

  .class-a {
    color: darkmagenta;
  }
}

@scope (.dark-scheme) {
  :scope {
    background-color: darkmagenta;
    color: antiquewhite;
  }

  .class-b {
    color: plum;
  }
}

@scope {
  :scope {
    color: red;
  }
}
