SCSS anti-patterns

abstracted-away-from-clarity.scss

@mixin link-colors($normal, $hover: null, $active: $hover, $visited: null, $focus: null) {
  color: $normal;

  &:visited { color: $visited; }
  &:focus { color: $focus; }
  &:hover { color: $hover; }
  &:active { color: $active; }
}

abstraction-without-processing.scss

@mixin apple {float: left; width: auto;}

better-handled-by-post-css.scss

@mixin opacity($opacity: 0.7) {
  -moz-opacity: $opacity;
  -khtml-opacity: $opacity;
  -webkit-opacity: $opacity;
  opacity: $opacity;
}

overly-specific-variable.scss

$dark-header-img-p-default:#222;

useless-variable.scss

$font-size-28: 28px;