source/misc/embedded_libs/fmt-8.1.1/doc/bootstrap/mixins/opacity.less

browsing at commit = 08317c5b6a32263183602d799a046f0f6cc8c454

branches: v2.9.X

// Opacity

.opacity(@opacity) {
  opacity: @opacity;
  // IE8 filter
  @opacity-ie: (@opacity * 100);
  filter: ~"alpha(opacity=@{opacity-ie})";
}