Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.7)
// Compass (v1.0.1)
// ----

@mixin media-query {
  @media (max-width: 600px){
    @content;
  }
}

.modernizr-class {
  .foo {
    color: red;
  }
  
  .bar {
    color: blue;
  }
}

@include media-query {
  .modernizr-class {
    .foo {
      color: green;
    }
    
    .bar {
      color: black;
    }
  }
}

SassMeister-output.css

.modernizr-class .foo {
  color: red;
}
.modernizr-class .bar {
  color: blue;
}

@media (max-width: 600px) {
  .modernizr-class .foo {
    color: green;
  }
  .modernizr-class .bar {
    color: black;
  }
}