OCBNET / CSS-Sass-3.6.4 / t / sass-spec / spec / libsass-closed-issues / issue_1210 / basic.hrx 
<===> input.scss
foo {
  color: blue;

  @at-root {
    bar {
      color: red;
    }
  }
}

foo {
  color: blue;

  @at-root bar {
    color: red;
  }
}

foo {
  color: blue;

  @at-root bar {
    baz {
      color: red;
    }
  }
}

foo {
  color: blue;

  @at-root {
    bar {
      baz {
        color: red;
      }
    }
  }
}


<===> output.css
foo {
  color: blue;
}
bar {
  color: red;
}

foo {
  color: blue;
}
bar {
  color: red;
}

foo {
  color: blue;
}
bar baz {
  color: red;
}

foo {
  color: blue;
}
bar baz {
  color: red;
}