<===> input.scss
foo {
  bar: baz;
  bang: {
    bip: 1px;
    bop: bar;}
  buzz: {
    fram: "foo";
    frum: moo;
  }
}

<===> output.css
foo {
  bar: baz;
  bang-bip: 1px;
  bang-bop: bar;
  buzz-fram: "foo";
  buzz-frum: moo;
}