Generated by SassMeister.com, the Sass playground.

SassMeister-input.scss

// ---
// Sass (v3.2.9)
// ---


%h1 {
  font-size: 2rem;
  line-height: 1.75;
}
%h2 {
  font-size: 1.5rem;
  line-height: 1.5;
}
h1 {
  @extend %h1;
}
h2 {
  @extend %h2;
}

article {
  .title {
    @extend %h1;
  }
}

aside {
  h1 {
    color: #bada55;
    font-size: 1.25rem;
  }
}

footer {
  .big-deal {
    h2 {
      @extend %h1;
    }
  }
}

SassMeister-output.css

h1, article .title, footer .big-deal h2 {
  font-size: 2rem;
  line-height: 1.75;
}

h2 {
  font-size: 1.5rem;
  line-height: 1.5;
}

aside h1 {
  color: #bada55;
  font-size: 1.25rem;
}