Sass is for Superman: Extends & Placeholder selectors

styles.scss

/**
 * @file
 * Sass if for Superman: Extends and Placeholder selectors
 */

%element-invisible {
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
}

.example {
  @extend %element-invisible;
  color: red;
}
.example-2 {
  @extend %element-invisible;
}