Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.14)
// Compass (v1.0.3)
// ----

%file-links {
  %style {
    &::before {
      background: no-repeat center;
      content: "";
      display: inline-block;
      height: 24px;
      margin-right: 4px;
      vertical-align: top;
      width: 16px;
    }

    * {
      font-size: inherit;
      font-style: inherit;
      font-weight: inherit;
    }
  }

  $files: (
    "pdf.png":        ("pdf"),
    "word.png":       ("doc"),
    "excel.png":      ("xls", "csv"),
    "powerpoint.png": ("ppt"),
    "text.png":       ("rtf", "txt"),
    "video.png":      ("mov", "mpeg", "avi", "mkv", "mp4", "qt", "3gp", "flv", "wmv"),
    "audio.png":      ("mp3", "wav", "aif", "m4a", "ogg", "flac"),
    "archive.png":    ("zip", "rar", "7z", "tar"),
    "photoshop.png":  ("psd", "psb")
  );

  @each $icon, $extentions in $files {
    @each $extention in $extentions {
      a[href*=".#{$extention}"] {
        @extend %style;
        &::before {
          // background-image: url(image-path('file-types/#{$icon}'));
          background-image: url('http://defacto.learningspaces.dev/assets/file-types/#{$icon}');
        }
      }
    }
  }
}

article {
  @extend %file-links;
}

SassMeister-output.css

article a[href*=".pdf"]::before, article a[href*=".doc"]::before, article a[href*=".xls"]::before, article a[href*=".csv"]::before, article a[href*=".ppt"]::before, article a[href*=".rtf"]::before, article a[href*=".txt"]::before, article a[href*=".mov"]::before, article a[href*=".mpeg"]::before, article a[href*=".avi"]::before, article a[href*=".mkv"]::before, article a[href*=".mp4"]::before, article a[href*=".qt"]::before, article a[href*=".3gp"]::before, article a[href*=".flv"]::before, article a[href*=".wmv"]::before, article a[href*=".mp3"]::before, article a[href*=".wav"]::before, article a[href*=".aif"]::before, article a[href*=".m4a"]::before, article a[href*=".ogg"]::before, article a[href*=".flac"]::before, article a[href*=".zip"]::before, article a[href*=".rar"]::before, article a[href*=".7z"]::before, article a[href*=".tar"]::before, article a[href*=".psd"]::before, article a[href*=".psb"]::before {
  background: no-repeat center;
  content: "";
  display: inline-block;
  height: 24px;
  margin-right: 4px;
  vertical-align: top;
  width: 16px;
}
article a[href*=".pdf"] *, article a[href*=".doc"] *, article a[href*=".xls"] *, article a[href*=".csv"] *, article a[href*=".ppt"] *, article a[href*=".rtf"] *, article a[href*=".txt"] *, article a[href*=".mov"] *, article a[href*=".mpeg"] *, article a[href*=".avi"] *, article a[href*=".mkv"] *, article a[href*=".mp4"] *, article a[href*=".qt"] *, article a[href*=".3gp"] *, article a[href*=".flv"] *, article a[href*=".wmv"] *, article a[href*=".mp3"] *, article a[href*=".wav"] *, article a[href*=".aif"] *, article a[href*=".m4a"] *, article a[href*=".ogg"] *, article a[href*=".flac"] *, article a[href*=".zip"] *, article a[href*=".rar"] *, article a[href*=".7z"] *, article a[href*=".tar"] *, article a[href*=".psd"] *, article a[href*=".psb"] * {
  font-size: inherit;
  font-style: inherit;
  font-weight: inherit;
}
article a[href*=".pdf"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/pdf.png");
}
article a[href*=".doc"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/word.png");
}
article a[href*=".xls"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/excel.png");
}
article a[href*=".csv"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/excel.png");
}
article a[href*=".ppt"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/powerpoint.png");
}
article a[href*=".rtf"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/text.png");
}
article a[href*=".txt"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/text.png");
}
article a[href*=".mov"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".mpeg"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".avi"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".mkv"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".mp4"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".qt"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".3gp"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".flv"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".wmv"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/video.png");
}
article a[href*=".mp3"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/audio.png");
}
article a[href*=".wav"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/audio.png");
}
article a[href*=".aif"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/audio.png");
}
article a[href*=".m4a"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/audio.png");
}
article a[href*=".ogg"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/audio.png");
}
article a[href*=".flac"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/audio.png");
}
article a[href*=".zip"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/archive.png");
}
article a[href*=".rar"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/archive.png");
}
article a[href*=".7z"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/archive.png");
}
article a[href*=".tar"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/archive.png");
}
article a[href*=".psd"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/photoshop.png");
}
article a[href*=".psb"]::before {
  background-image: url("http://defacto.learningspaces.dev/assets/file-types/photoshop.png");
}