Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.2)
// Compass (v1.0.0.alpha.17)
// ----

.button {
  border-radius: 3px;
  background: grey;
  color: white;
}

.blue-button {
  @extend .button;
  background: blue;
}

SassMeister-output.css

.button, .blue-button {
  border-radius: 3px;
  background: grey;
  color: white;
}

.blue-button {
  background: blue;
}