angular-ui-router-tabs/bower_components/bootstrap/less/mixins/opacity.less

Idiot-proof tab panes with route support using Angular.js + Bootstrap 3 + UI Router.

// Opacity

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