$icon-file-dir: '/lib/imgs/icon/file';

$icon-file: (
        img:(jpg, png, jpeg, gif),
        zip:(rar, zip),
        txt:(txt, ts, java, css, scss, js, html),
        pdf:(pdf)
);

.icon-file {
  background: {
    image: url('#{$icon-file-dir}/unkwon.png');
    repeat: no-repeat;
    size: contain;
    position: center;
  }
;
}

@each $name, $list in $icon-file {
  @each $value in $list {
    .icon-file-#{$value} {
      font-size: 0px; // 글씨를 없앤다.
      background-image: url('#{$icon-file-dir}/#{$name}.png');
    }
  }
}