netbeans.apache.org/src/content/scss/components/_awesome-icons.scss

//@import "../fonts/font-awesome";

/*
Taken from 
https://github.com/asciidoctor/asciidoctor-stylesheet-factory/blob/master/sass/components/_awesome-icons.scss
(MIT License)
*/

span.icon > .fa {
  cursor: default;
  a & {
    cursor: inherit;
  }
}

.admonitionblock td.icon {
  [class^="fa icon-"] {
    font-size: 2.5em;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    cursor: default;
  }
  
  .icon-note:before {
    // @extend .fa-thumb-tack;
    //content: "\f08d";
    //color: scale-color(green, $lightness: $rainbow-lightness);

    //@extend .fa-info-circle;
    content: "\f05a";
    //color: scale-color(mediumblue, $lightness: $rainbow-lightness);
    //color: $primary-color;
    color: $nb-blue;
    // color: scale-color($primary-color, $lightness: $rainbow-lightness);
  }
  
  .icon-tip:before {
    // @extend .fa-info-circle;
    //content: "\f05a";
    //color: scale-color(mediumblue, $lightness: $rainbow-lightness);
    // @extend .fa-lightbulb-o;
    content: "\f0eb";
    //color: scale-color(yellow, $lightness: $rainbow-lightness);
    //color: scale-color(yellow, $saturation: -15%);
    //color: $primary-color;
    text-shadow: 1px 1px 2px rgba(155, 155, 0, .8);
    color: $nb-green;
  }
  
  .icon-warning:before {
    // @extend .fa-exclamation-triangle;
    content: "\f071";
    color: $nb-magenta;
  }

  .icon-caution:before {
    // @extend .fa-fire;
    content: "\f06d";
    color: $nb-magenta;
  }
  
  .icon-important:before {
    // @extend .icon-exclamation-circle;
    content: "\f06a";
    color: $nb-blue;
  }
}

// alternatively could use ➊ through &#10131 to get the numbered circles,
// then style them as appropriate; would need to output them in the text, though
.conum[data-value] {
  display: inline-block;
  color: #fff !important;
  background-color: $body-font-color;
  border-radius: 100px;
  text-align: center;
  font-size: 0.75em;
  //width: 1.5em;
  //height: 1.5em;
  //line-height: 1.5em;
  width: 1.67em;
  height: 1.67em;
  line-height: 1.67em;
  // FIXME make this font a variable
  font-family: "Open Sans", "DejaVu Sans", sans-serif;
  font-style: normal;
  // QUESTION should the callout numbers be regular weight?
  font-weight: bold;
  // text-indent only seems to be required for webkit
  //text-indent: -1px;

  & * {
    color: #fff !important;
  }

  & + b {
    display: none;
  }

  &:after {
    content: attr(data-value);
  }

  pre & {
    position: relative;
    top: -0.125em;
  }
}

// hack to disallow syntax highlighting from changing the color
b.conum * {
  color: inherit !important;
}

// hack for when highlight.js adds a bogus element into DOM
// QUESTION should we solve this w/ javascript instead?
.conum:not([data-value]):empty {
  display: none;
}