How to translate from SASS to CSS?

Question

Sass

#sidebartoggler {
  display:none {
    &:checked + .page-wrap {
      .slidebar {
        left:0 {}
      }
    }
  }
}

Answer 1

The code you provided cannot be translated, because it is complete heresy.
Apparently it should be something like this:

#sidebartoggler {
  display:none;
}

#sidebartoggler:checked + .page-wrap .slidebar {
  left:0;
}