SASS: Emboss Text

gistfile1.sass

@mixin box-emboss($outerOpacity, $innerOpacity) {
  box-shadow:
    rgba(white, $outerOpacity) 0 1px 0, 
    rgba(black, $innerOpacity) 0 1px 0 inset;
}

.module, header[role="banner"] {
  @include box-emboss(0.3, 0.6);
}

%box-emboss {
  @include box-emboss(0.3, 0.6);
}

header[role="banner"] {
  @extend %box-emboss;
}

...

.module {
  @extend %box-emboss;
}