FonAwesome Icons using Mixins instead of classes (Please see the first comment)

font-awesome-mixins.less

/*  Font Awesome
    the iconic font designed for use with Twitter Bootstrap
    -------------------------------------------------------
    The full suite of pictographic icons, examples, and documentation
    can be found at: http://fortawesome.github.com/Font-Awesome/

    License
    -------------------------------------------------------
    The Font Awesome webfont, CSS, and LESS files are licensed under CC BY 3.0:
    http://creativecommons.org/licenses/by/3.0/ A mention of
    'Font Awesome - http://fortawesome.github.com/Font-Awesome' in human-readable
    source code is considered acceptable attribution (most common on the web).
    If human readable source code is not available to the end user, a mention in
    an 'About' or 'Credits' screen is considered acceptable (most common in desktop
    or mobile software).

    Contact
    -------------------------------------------------------
    Email: dave@davegandy.com
    Twitter: http://twitter.com/fortaweso_me
    Work: Lead Product Designer @ http://kyruus.com

    */

@fontAwesomePath: '../font';

@font-face {
  font-family: 'FontAwesome';
  src: url('@{fontAwesomePath}/fontawesome-webfont.eot');
  src: url('@{fontAwesomePath}/fontawesome-webfont.eot?#iefix') format('embedded-opentype'),
    url('@{fontAwesomePath}/fontawesome-webfont.woff') format('woff'),
    url('@{fontAwesomePath}/fontawesome-webfont.ttf') format('truetype'),
    url('@{fontAwesomePath}/fontawesome-webfont.svg#FontAwesome') format('svg');
  font-weight: normal;
  font-style: normal;
}

/*  Font Awesome styles
    ------------------------------------------------------- */
.icon() {
    &:before {
        font-family: FontAwesome;
        font-weight: normal;
        font-style: normal;
        display: inline-block;
        text-decoration: inherit;
        // TODO: Check if the following line causes any trouble. (it was applied only for icons inside buttons)
        line-height: .9em;
    }
}

[class^="icon"]:before,
[class*=" icon"]:before {
  .icon;
}

a [class^="icon"],
a [class*=" icon"] {
  display: inline-block;
  text-decoration: inherit;
}

/* makes the font 33% larger relative to the icon container */
.icon-large() {
    &:before {
        vertical-align: middle;
        font-size: 4/3em;
    }
}

.btn, .nav-tabs {
  [class^="icon"],
  [class*=" icon"] {
  /* keeps button heights with and without icons the same */
    line-height: .9em;
  }
}

/****************************************************
/* This is where the trouble begins
/****************************************************

li {
  [class^="icon"],
  [class*=" icon"] {
    display: inline-block;
    width: 1.25em;
    text-align: center;
  }
  /* Why there are two identical selectors here? */
  .icon-large:before,
  .icon-large:before {
    /* 1.5 increased font size for icon-large * 1.25 width */
    width: 1.5*1.25em;
  }
}

ul.icons {
  list-style-type: none;
  margin-left: 2em;
  text-indent: -.8em;

  li {
    [class^="icon"],
    [class*=" icon"] {
      width: .8em;
    }
    .icon-large:before,
    .icon-large:before {
      /* 1.5 increased font size for icon-large * 1.25 width */
      vertical-align: initial;
//      width: 1.5*1.25em;
    }
  }
}

/****************************************************
/* Trouble ends here
/****************************************************

/*  Font Awesome uses the Unicode Private Use Area (PUA) to ensure screen
    readers do not read off random characters that represent icons */
.icon-glass()                { .icon; &:before { content: "\f000"; }}
.icon-music()                { .icon; &:before { content: "\f001"; }}
.icon-search()               { .icon; &:before { content: "\f002"; }}
.icon-envelope()             { .icon; &:before { content: "\f003"; }}
.icon-heart()                { .icon; &:before { content: "\f004"; }}
.icon-star()                 { .icon; &:before { content: "\f005"; }}
.icon-star-empty()           { .icon; &:before { content: "\f006"; }}
.icon-user()                 { .icon; &:before { content: "\f007"; }}
.icon-film()                 { .icon; &:before { content: "\f008"; }}
.icon-th-large()             { .icon; &:before { content: "\f009"; }}
.icon-th()                   { .icon; &:before { content: "\f00a"; }}
.icon-th-list()              { .icon; &:before { content: "\f00b"; }}
.icon-ok()                   { .icon; &:before { content: "\f00c"; }}
.icon-remove()               { .icon; &:before { content: "\f00d"; }}
.icon-zoom-in()              { .icon; &:before { content: "\f00e"; }}

.icon-zoom-out()             { .icon; &:before { content: "\f010"; }}
.icon-off()                  { .icon; &:before { content: "\f011"; }}
.icon-signal()               { .icon; &:before { content: "\f012"; }}
.icon-cog()                  { .icon; &:before { content: "\f013"; }}
.icon-trash()                { .icon; &:before { content: "\f014"; }}
.icon-home()                 { .icon; &:before { content: "\f015"; }}
.icon-file()                 { .icon; &:before { content: "\f016"; }}
.icon-time()                 { .icon; &:before { content: "\f017"; }}
.icon-road()                 { .icon; &:before { content: "\f018"; }}
.icon-download-alt()         { .icon; &:before { content: "\f019"; }}
.icon-download()             { .icon; &:before { content: "\f01a"; }}
.icon-upload()               { .icon; &:before { content: "\f01b"; }}
.icon-inbox()                { .icon; &:before { content: "\f01c"; }}
.icon-play-circle()          { .icon; &:before { content: "\f01d"; }}
.icon-repeat()               { .icon; &:before { content: "\f01e"; }}

/* \f020 doesn't work in Safari. all shifted one down */
.icon-refresh()              { .icon; &:before { content: "\f021"; }}
.icon-list-alt()             { .icon; &:before { content: "\f022"; }}
.icon-lock()                 { .icon; &:before { content: "\f023"; }}
.icon-flag()                 { .icon; &:before { content: "\f024"; }}
.icon-headphones()           { .icon; &:before { content: "\f025"; }}
.icon-volume-off()           { .icon; &:before { content: "\f026"; }}
.icon-volume-down()          { .icon; &:before { content: "\f027"; }}
.icon-volume-up()            { .icon; &:before { content: "\f028"; }}
.icon-qrcode()               { .icon; &:before { content: "\f029"; }}
.icon-barcode()              { .icon; &:before { content: "\f02a"; }}
.icon-tag()                  { .icon; &:before { content: "\f02b"; }}
.icon-tags()                 { .icon; &:before { content: "\f02c"; }}
.icon-book()                 { .icon; &:before { content: "\f02d"; }}
.icon-bookmark()             { .icon; &:before { content: "\f02e"; }}
.icon-print()                { .icon; &:before { content: "\f02f"; }}

.icon-camera()               { .icon; &:before { content: "\f030"; }}
.icon-font()                 { .icon; &:before { content: "\f031"; }}
.icon-bold()                 { .icon; &:before { content: "\f032"; }}
.icon-italic()               { .icon; &:before { content: "\f033"; }}
.icon-text-height()          { .icon; &:before { content: "\f034"; }}
.icon-text-width()           { .icon; &:before { content: "\f035"; }}
.icon-align-left()           { .icon; &:before { content: "\f036"; }}
.icon-align-center()         { .icon; &:before { content: "\f037"; }}
.icon-align-right()          { .icon; &:before { content: "\f038"; }}
.icon-align-justify()        { .icon; &:before { content: "\f039"; }}
.icon-list()                 { .icon; &:before { content: "\f03a"; }}
.icon-indent-left()          { .icon; &:before { content: "\f03b"; }}
.icon-indent-right()         { .icon; &:before { content: "\f03c"; }}
.icon-facetime-video()       { .icon; &:before { content: "\f03d"; }}
.icon-picture()              { .icon; &:before { content: "\f03e"; }}

.icon-pencil()               { .icon; &:before { content: "\f040"; }}
.icon-map-marker()           { .icon; &:before { content: "\f041"; }}
.icon-adjust()               { .icon; &:before { content: "\f042"; }}
.icon-tint()                 { .icon; &:before { content: "\f043"; }}
.icon-edit()                 { .icon; &:before { content: "\f044"; }}
.icon-share()                { .icon; &:before { content: "\f045"; }}
.icon-check()                { .icon; &:before { content: "\f046"; }}
.icon-move()                 { .icon; &:before { content: "\f047"; }}
.icon-step-backward()        { .icon; &:before { content: "\f048"; }}
.icon-fast-backward()        { .icon; &:before { content: "\f049"; }}
.icon-backward()             { .icon; &:before { content: "\f04a"; }}
.icon-play()                 { .icon; &:before { content: "\f04b"; }}
.icon-pause()                { .icon; &:before { content: "\f04c"; }}
.icon-stop()                 { .icon; &:before { content: "\f04d"; }}
.icon-forward()              { .icon; &:before { content: "\f04e"; }}

.icon-fast-forward()         { .icon; &:before { content: "\f050"; }}
.icon-step-forward()         { .icon; &:before { content: "\f051"; }}
.icon-eject()                { .icon; &:before { content: "\f052"; }}
.icon-chevron-left()         { .icon; &:before { content: "\f053"; }}
.icon-chevron-right()        { .icon; &:before { content: "\f054"; }}
.icon-plus-sign()            { .icon; &:before { content: "\f055"; }}
.icon-minus-sign()           { .icon; &:before { content: "\f056"; }}
.icon-remove-sign()          { .icon; &:before { content: "\f057"; }}
.icon-ok-sign()              { .icon; &:before { content: "\f058"; }}
.icon-question-sign()        { .icon; &:before { content: "\f059"; }}
.icon-info-sign()            { .icon; &:before { content: "\f05a"; }}
.icon-screenshot()           { .icon; &:before { content: "\f05b"; }}
.icon-remove-circle()        { .icon; &:before { content: "\f05c"; }}
.icon-ok-circle()            { .icon; &:before { content: "\f05d"; }}
.icon-ban-circle()           { .icon; &:before { content: "\f05e"; }}

.icon-arrow-left()           { .icon; &:before { content: "\f060"; }}
.icon-arrow-right()          { .icon; &:before { content: "\f061"; }}
.icon-arrow-up()             { .icon; &:before { content: "\f062"; }}
.icon-arrow-down()           { .icon; &:before { content: "\f063"; }}
.icon-share-alt()            { .icon; &:before { content: "\f064"; }}
.icon-resize-full()          { .icon; &:before { content: "\f065"; }}
.icon-resize-small()         { .icon; &:before { content: "\f066"; }}
.icon-plus()                 { .icon; &:before { content: "\f067"; }}
.icon-minus()                { .icon; &:before { content: "\f068"; }}
.icon-asterisk()             { .icon; &:before { content: "\f069"; }}
.icon-exclamation-sign()     { .icon; &:before { content: "\f06a"; }}
.icon-gift()                 { .icon; &:before { content: "\f06b"; }}
.icon-leaf()                 { .icon; &:before { content: "\f06c"; }}
.icon-fire()                 { .icon; &:before { content: "\f06d"; }}
.icon-eye-open()             { .icon; &:before { content: "\f06e"; }}

.icon-eye-close()            { .icon; &:before { content: "\f070"; }}
.icon-warning-sign()         { .icon; &:before { content: "\f071"; }}
.icon-plane()                { .icon; &:before { content: "\f072"; }}
.icon-calendar()             { .icon; &:before { content: "\f073"; }}
.icon-random()               { .icon; &:before { content: "\f074"; }}
.icon-comment()              { .icon; &:before { content: "\f075"; }}
.icon-magnet()               { .icon; &:before { content: "\f076"; }}
.icon-chevron-up()           { .icon; &:before { content: "\f077"; }}
.icon-chevron-down()         { .icon; &:before { content: "\f078"; }}
.icon-retweet()              { .icon; &:before { content: "\f079"; }}
.icon-shopping-cart()        { .icon; &:before { content: "\f07a"; }}
.icon-folder-close()         { .icon; &:before { content: "\f07b"; }}
.icon-folder-open()          { .icon; &:before { content: "\f07c"; }}
.icon-resize-vertical()      { .icon; &:before { content: "\f07d"; }}
.icon-resize-horizontal()    { .icon; &:before { content: "\f07e"; }}

.icon-bar-chart()            { .icon; &:before { content: "\f080"; }}
.icon-twitter-sign()         { .icon; &:before { content: "\f081"; }}
.icon-facebook-sign()        { .icon; &:before { content: "\f082"; }}
.icon-camera-retro()         { .icon; &:before { content: "\f083"; }}
.icon-key()                  { .icon; &:before { content: "\f084"; }}
.icon-cogs()                 { .icon; &:before { content: "\f085"; }}
.icon-comments()             { .icon; &:before { content: "\f086"; }}
.icon-thumbs-up()            { .icon; &:before { content: "\f087"; }}
.icon-thumbs-down()          { .icon; &:before { content: "\f088"; }}
.icon-star-half()            { .icon; &:before { content: "\f089"; }}
.icon-heart-empty()          { .icon; &:before { content: "\f08a"; }}
.icon-signout()              { .icon; &:before { content: "\f08b"; }}
.icon-linkedin-sign()        { .icon; &:before { content: "\f08c"; }}
.icon-pushpin()              { .icon; &:before { content: "\f08d"; }}
.icon-external-link()        { .icon; &:before { content: "\f08e"; }}

.icon-signin()               { .icon; &:before { content: "\f090"; }}
.icon-trophy()               { .icon; &:before { content: "\f091"; }}
.icon-github-sign()          { .icon; &:before { content: "\f092"; }}
.icon-upload-alt()           { .icon; &:before { content: "\f093"; }}
.icon-lemon()                { .icon; &:before { content: "\f094"; }}
.icon-phone()                { .icon; &:before { content: "\f095"; }}
.icon-check-empty()          { .icon; &:before { content: "\f096"; }}
.icon-bookmark-empty()       { .icon; &:before { content: "\f097"; }}
.icon-phone-sign()           { .icon; &:before { content: "\f098"; }}
.icon-twitter()              { .icon; &:before { content: "\f099"; }}
.icon-facebook()             { .icon; &:before { content: "\f09a"; }}
.icon-github()               { .icon; &:before { content: "\f09b"; }}
.icon-unlock()               { .icon; &:before { content: "\f09c"; }}
.icon-credit-card()          { .icon; &:before { content: "\f09d"; }}
.icon-rss()                  { .icon; &:before { content: "\f09e"; }}

.icon-hdd()                  { .icon; &:before { content: "\f0a0"; }}
.icon-bullhorn()             { .icon; &:before { content: "\f0a1"; }}
.icon-bell()                 { .icon; &:before { content: "\f0a2"; }}
.icon-certificate()          { .icon; &:before { content: "\f0a3"; }}
.icon-hand-right()           { .icon; &:before { content: "\f0a4"; }}
.icon-hand-left()            { .icon; &:before { content: "\f0a5"; }}
.icon-hand-up()              { .icon; &:before { content: "\f0a6"; }}
.icon-hand-down()            { .icon; &:before { content: "\f0a7"; }}
.icon-circle-arrow-left()    { .icon; &:before { content: "\f0a8"; }}
.icon-circle-arrow-right()   { .icon; &:before { content: "\f0a9"; }}
.icon-circle-arrow-up()      { .icon; &:before { content: "\f0aa"; }}
.icon-circle-arrow-down()    { .icon; &:before { content: "\f0ab"; }}
.icon-globe()                { .icon; &:before { content: "\f0ac"; }}
.icon-wrench()               { .icon; &:before { content: "\f0ad"; }}
.icon-tasks()                { .icon; &:before { content: "\f0ae"; }}

.icon-filter()               { .icon; &:before { content: "\f0b0"; }}
.icon-briefcase()            { .icon; &:before { content: "\f0b1"; }}
.icon-fullscreen()           { .icon; &:before { content: "\f0b2"; }}

.icon-group()                { .icon; &:before { content: "\f0c0"; }}
.icon-link()                 { .icon; &:before { content: "\f0c1"; }}
.icon-cloud()                { .icon; &:before { content: "\f0c2"; }}
.icon-beaker()               { .icon; &:before { content: "\f0c3"; }}
.icon-cut()                  { .icon; &:before { content: "\f0c4"; }}
.icon-copy()                 { .icon; &:before { content: "\f0c5"; }}
.icon-paper-clip()           { .icon; &:before { content: "\f0c6"; }}
.icon-save()                 { .icon; &:before { content: "\f0c7"; }}
.icon-sign-blank()           { .icon; &:before { content: "\f0c8"; }}
.icon-reorder()              { .icon; &:before { content: "\f0c9"; }}
.icon-list-ul()              { .icon; &:before { content: "\f0ca"; }}
.icon-list-ol()              { .icon; &:before { content: "\f0cb"; }}
.icon-strikethrough()        { .icon; &:before { content: "\f0cc"; }}
.icon-underline()            { .icon; &:before { content: "\f0cd"; }}
.icon-table()                { .icon; &:before { content: "\f0ce"; }}

.icon-magic()                { .icon; &:before { content: "\f0d0"; }}
.icon-truck()                { .icon; &:before { content: "\f0d1"; }}
.icon-pinterest()            { .icon; &:before { content: "\f0d2"; }}
.icon-pinterest-sign()       { .icon; &:before { content: "\f0d3"; }}
.icon-google-plus-sign()     { .icon; &:before { content: "\f0d4"; }}
.icon-google-plus()          { .icon; &:before { content: "\f0d5"; }}
.icon-money()                { .icon; &:before { content: "\f0d6"; }}
.icon-caret-down()           { .icon; &:before { content: "\f0d7"; }}
.icon-caret-up()             { .icon; &:before { content: "\f0d8"; }}
.icon-caret-left()           { .icon; &:before { content: "\f0d9"; }}
.icon-caret-right()          { .icon; &:before { content: "\f0da"; }}
.icon-columns()              { .icon; &:before { content: "\f0db"; }}
.icon-sort()                 { .icon; &:before { content: "\f0dc"; }}
.icon-sort-down()            { .icon; &:before { content: "\f0dd"; }}
.icon-sort-up()              { .icon; &:before { content: "\f0de"; }}

.icon-envelope-alt()         { .icon; &:before { content: "\f0e0"; }}
.icon-linkedin()             { .icon; &:before { content: "\f0e1"; }}
.icon-undo()                 { .icon; &:before { content: "\f0e2"; }}
.icon-legal()                { .icon; &:before { content: "\f0e3"; }}
.icon-dashboard()            { .icon; &:before { content: "\f0e4"; }}
.icon-comment-alt()          { .icon; &:before { content: "\f0e5"; }}
.icon-comments-alt()         { .icon; &:before { content: "\f0e6"; }}
.icon-bolt()                 { .icon; &:before { content: "\f0e7"; }}
.icon-sitemap()              { .icon; &:before { content: "\f0e8"; }}
.icon-umbrella()             { .icon; &:before { content: "\f0e9"; }}
.icon-paste()                { .icon; &:before { content: "\f0ea"; }}

.icon-user-md()              { .icon; &:before { content: "\f200"; }}

To avoid writing the \f200 you could use @fa-var-user-md.

Here is the definition of the icons:

.icon-glass()                { .icon; &:before { content: @fa-var-glass; }}
.icon-music()                { .icon; &:before { content: @fa-var-music; }}
.icon-search()               { .icon; &:before { content: @fa-var-search; }}
.icon-envelope()             { .icon; &:before { content: @fa-var-envelope; }}
.icon-heart()                { .icon; &:before { content: @fa-var-heart; }}
.icon-star()                 { .icon; &:before { content: @fa-var-star; }}
.icon-star-empty()           { .icon; &:before { content: @fa-var-star-empty; }}
.icon-user()                 { .icon; &:before { content: @fa-var-user; }}
.icon-film()                 { .icon; &:before { content: @fa-var-film; }}
.icon-th-large()             { .icon; &:before { content: @fa-var-th-large; }}
.icon-th()                   { .icon; &:before { content: @fa-var-th; }}
.icon-th-list()              { .icon; &:before { content: @fa-var-th-list; }}
.icon-ok()                   { .icon; &:before { content: @fa-var-ok; }}
.icon-remove()               { .icon; &:before { content: @fa-var-remove; }}
.icon-zoom-in()              { .icon; &:before { content: @fa-var-zoom-in; }}

.icon-zoom-out()             { .icon; &:before { content: @fa-var-zoom-out; }}
.icon-off()                  { .icon; &:before { content: @fa-var-off; }}
.icon-signal()               { .icon; &:before { content: @fa-var-signal; }}
.icon-cog()                  { .icon; &:before { content: @fa-var-cog; }}
.icon-trash()                { .icon; &:before { content: @fa-var-trash; }}
.icon-home()                 { .icon; &:before { content: @fa-var-home; }}
.icon-file()                 { .icon; &:before { content: @fa-var-file; }}
.icon-time()                 { .icon; &:before { content: @fa-var-time; }}
.icon-road()                 { .icon; &:before { content: @fa-var-road; }}
.icon-download-alt()         { .icon; &:before { content: @fa-var-download-alt; }}
.icon-download()             { .icon; &:before { content: @fa-var-download; }}
.icon-upload()               { .icon; &:before { content: @fa-var-upload; }}
.icon-inbox()                { .icon; &:before { content: @fa-var-inbox; }}
.icon-play-circle()          { .icon; &:before { content: @fa-var-play-circle; }}
.icon-repeat()               { .icon; &:before { content: @fa-var-repeat; }}

/* \f020 doesn't work in Safari. all shifted one down */
.icon-refresh()              { .icon; &:before { content: @fa-var-refresh; }}
.icon-list-alt()             { .icon; &:before { content: @fa-var-list-alt; }}
.icon-lock()                 { .icon; &:before { content: @fa-var-lock; }}
.icon-flag()                 { .icon; &:before { content: @fa-var-flag; }}
.icon-headphones()           { .icon; &:before { content: @fa-var-headphones; }}
.icon-volume-off()           { .icon; &:before { content: @fa-var-volume-off; }}
.icon-volume-down()          { .icon; &:before { content: @fa-var-volume-down; }}
.icon-volume-up()            { .icon; &:before { content: @fa-var-volume-up; }}
.icon-qrcode()               { .icon; &:before { content: @fa-var-qrcode; }}
.icon-barcode()              { .icon; &:before { content: @fa-var-barcode; }}
.icon-tag()                  { .icon; &:before { content: @fa-var-tag; }}
.icon-tags()                 { .icon; &:before { content: @fa-var-tags; }}
.icon-book()                 { .icon; &:before { content: @fa-var-book; }}
.icon-bookmark()             { .icon; &:before { content: @fa-var-bookmark; }}
.icon-print()                { .icon; &:before { content: @fa-var-print; }}

.icon-camera()               { .icon; &:before { content: @fa-var-camera; }}
.icon-font()                 { .icon; &:before { content: @fa-var-font; }}
.icon-bold()                 { .icon; &:before { content: @fa-var-bold; }}
.icon-italic()               { .icon; &:before { content: @fa-var-italic; }}
.icon-text-height()          { .icon; &:before { content: @fa-var-text-height; }}
.icon-text-width()           { .icon; &:before { content: @fa-var-text-width; }}
.icon-align-left()           { .icon; &:before { content: @fa-var-align-left; }}
.icon-align-center()         { .icon; &:before { content: @fa-var-align-center; }}
.icon-align-right()          { .icon; &:before { content: @fa-var-align-right; }}
.icon-align-justify()        { .icon; &:before { content: @fa-var-align-justify; }}
.icon-list()                 { .icon; &:before { content: @fa-var-list; }}
.icon-indent-left()          { .icon; &:before { content: @fa-var-indent-left; }}
.icon-indent-right()         { .icon; &:before { content: @fa-var-indent-right; }}
.icon-facetime-video()       { .icon; &:before { content: @fa-var-facetime-video; }}
.icon-picture()              { .icon; &:before { content: @fa-var-picture; }}

.icon-pencil()               { .icon; &:before { content: @fa-var-pencil; }}
.icon-map-marker()           { .icon; &:before { content: @fa-var-map-marker; }}
.icon-adjust()               { .icon; &:before { content: @fa-var-adjust; }}
.icon-tint()                 { .icon; &:before { content: @fa-var-tint; }}
.icon-edit()                 { .icon; &:before { content: @fa-var-edit; }}
.icon-share()                { .icon; &:before { content: @fa-var-share; }}
.icon-check()                { .icon; &:before { content: @fa-var-check; }}
.icon-move()                 { .icon; &:before { content: @fa-var-move; }}
.icon-step-backward()        { .icon; &:before { content: @fa-var-step-backward; }}
.icon-fast-backward()        { .icon; &:before { content: @fa-var-fast-backward; }}
.icon-backward()             { .icon; &:before { content: @fa-var-backward; }}
.icon-play()                 { .icon; &:before { content: @fa-var-play; }}
.icon-pause()                { .icon; &:before { content: @fa-var-pause; }}
.icon-stop()                 { .icon; &:before { content: @fa-var-stop; }}
.icon-forward()              { .icon; &:before { content: @fa-var-forward; }}

.icon-fast-forward()         { .icon; &:before { content: @fa-var-fast-forward; }}
.icon-step-forward()         { .icon; &:before { content: @fa-var-step-forward; }}
.icon-eject()                { .icon; &:before { content: @fa-var-eject; }}
.icon-chevron-left()         { .icon; &:before { content: @fa-var-chevron-left; }}
.icon-chevron-right()        { .icon; &:before { content: @fa-var-chevron-right; }}
.icon-plus-sign()            { .icon; &:before { content: @fa-var-plus-sign; }}
.icon-minus-sign()           { .icon; &:before { content: @fa-var-minus-sign; }}
.icon-remove-sign()          { .icon; &:before { content: @fa-var-remove-sign; }}
.icon-ok-sign()              { .icon; &:before { content: @fa-var-ok-sign; }}
.icon-question-sign()        { .icon; &:before { content: @fa-var-question-sign; }}
.icon-info-sign()            { .icon; &:before { content: @fa-var-info-sign; }}
.icon-screenshot()           { .icon; &:before { content: @fa-var-screenshot; }}
.icon-remove-circle()        { .icon; &:before { content: @fa-var-remove-circle; }}
.icon-ok-circle()            { .icon; &:before { content: @fa-var-ok-circle; }}
.icon-ban-circle()           { .icon; &:before { content: @fa-var-ban-circle; }}

.icon-arrow-left()           { .icon; &:before { content: @fa-var-arrow-left; }}
.icon-arrow-right()          { .icon; &:before { content: @fa-var-arrow-right; }}
.icon-arrow-up()             { .icon; &:before { content: @fa-var-arrow-up; }}
.icon-arrow-down()           { .icon; &:before { content: @fa-var-arrow-down; }}
.icon-share-alt()            { .icon; &:before { content: @fa-var-share-alt; }}
.icon-resize-full()          { .icon; &:before { content: @fa-var-resize-full; }}
.icon-resize-small()         { .icon; &:before { content: @fa-var-resize-small; }}
.icon-plus()                 { .icon; &:before { content: @fa-var-plus; }}
.icon-minus()                { .icon; &:before { content: @fa-var-minus; }}
.icon-asterisk()             { .icon; &:before { content: @fa-var-asterisk; }}
.icon-exclamation-sign()     { .icon; &:before { content: @fa-var-exclamation-sign; }}
.icon-gift()                 { .icon; &:before { content: @fa-var-gift; }}
.icon-leaf()                 { .icon; &:before { content: @fa-var-leaf; }}
.icon-fire()                 { .icon; &:before { content: @fa-var-fire; }}
.icon-eye-open()             { .icon; &:before { content: @fa-var-eye-open; }}

.icon-eye-close()            { .icon; &:before { content: @fa-var-eye-close; }}
.icon-warning-sign()         { .icon; &:before { content: @fa-var-warning-sign; }}
.icon-plane()                { .icon; &:before { content: @fa-var-plane; }}
.icon-calendar()             { .icon; &:before { content: @fa-var-calendar; }}
.icon-random()               { .icon; &:before { content: @fa-var-random; }}
.icon-comment()              { .icon; &:before { content: @fa-var-comment; }}
.icon-magnet()               { .icon; &:before { content: @fa-var-magnet; }}
.icon-chevron-up()           { .icon; &:before { content: @fa-var-chevron-up; }}
.icon-chevron-down()         { .icon; &:before { content: @fa-var-chevron-down; }}
.icon-retweet()              { .icon; &:before { content: @fa-var-retweet; }}
.icon-shopping-cart()        { .icon; &:before { content: @fa-var-shopping-cart; }}
.icon-folder-close()         { .icon; &:before { content: @fa-var-folder-close; }}
.icon-folder-open()          { .icon; &:before { content: @fa-var-folder-open; }}
.icon-resize-vertical()      { .icon; &:before { content: @fa-var-resize-vertical; }}
.icon-resize-horizontal()    { .icon; &:before { content: @fa-var-resize-horizontal; }}

.icon-bar-chart()            { .icon; &:before { content: @fa-var-bar-chart; }}
.icon-twitter-sign()         { .icon; &:before { content: @fa-var-twitter-sign; }}
.icon-facebook-sign()        { .icon; &:before { content: @fa-var-facebook-sign; }}
.icon-camera-retro()         { .icon; &:before { content: @fa-var-camera-retro; }}
.icon-key()                  { .icon; &:before { content: @fa-var-key; }}
.icon-cogs()                 { .icon; &:before { content: @fa-var-cogs; }}
.icon-comments()             { .icon; &:before { content: @fa-var-comments; }}
.icon-thumbs-up()            { .icon; &:before { content: @fa-var-thumbs-up; }}
.icon-thumbs-down()          { .icon; &:before { content: @fa-var-thumbs-down; }}
.icon-star-half()            { .icon; &:before { content: @fa-var-star-half; }}
.icon-heart-empty()          { .icon; &:before { content: @fa-var-heart-empty; }}
.icon-signout()              { .icon; &:before { content: @fa-var-signout; }}
.icon-linkedin-sign()        { .icon; &:before { content: @fa-var-linkedin-sign; }}
.icon-pushpin()              { .icon; &:before { content: @fa-var-pushpin; }}
.icon-external-link()        { .icon; &:before { content: @fa-var-external-link; }}

.icon-signin()               { .icon; &:before { content: @fa-var-signin; }}
.icon-trophy()               { .icon; &:before { content: @fa-var-trophy; }}
.icon-github-sign()          { .icon; &:before { content: @fa-var-github-sign; }}
.icon-upload-alt()           { .icon; &:before { content: @fa-var-upload-alt; }}
.icon-lemon()                { .icon; &:before { content: @fa-var-lemon; }}
.icon-phone()                { .icon; &:before { content: @fa-var-phone; }}
.icon-check-empty()          { .icon; &:before { content: @fa-var-check-empty; }}
.icon-bookmark-empty()       { .icon; &:before { content: @fa-var-bookmark-empty; }}
.icon-phone-sign()           { .icon; &:before { content: @fa-var-phone-sign; }}
.icon-twitter()              { .icon; &:before { content: @fa-var-twitter; }}
.icon-facebook()             { .icon; &:before { content: @fa-var-facebook; }}
.icon-github()               { .icon; &:before { content: @fa-var-github; }}
.icon-unlock()               { .icon; &:before { content: @fa-var-unlock; }}
.icon-credit-card()          { .icon; &:before { content: @fa-var-credit-card; }}
.icon-rss()                  { .icon; &:before { content: @fa-var-rss; }}

.icon-hdd()                  { .icon; &:before { content: @fa-var-hdd; }}
.icon-bullhorn()             { .icon; &:before { content: @fa-var-bullhorn; }}
.icon-bell()                 { .icon; &:before { content: @fa-var-bell; }}
.icon-certificate()          { .icon; &:before { content: @fa-var-certificate; }}
.icon-hand-right()           { .icon; &:before { content: @fa-var-hand-right; }}
.icon-hand-left()            { .icon; &:before { content: @fa-var-hand-left; }}
.icon-hand-up()              { .icon; &:before { content: @fa-var-hand-up; }}
.icon-hand-down()            { .icon; &:before { content: @fa-var-hand-down; }}
.icon-circle-arrow-left()    { .icon; &:before { content: @fa-var-circle-arrow-left; }}
.icon-circle-arrow-right()   { .icon; &:before { content: @fa-var-circle-arrow-right; }}
.icon-circle-arrow-up()      { .icon; &:before { content: @fa-var-circle-arrow-up; }}
.icon-circle-arrow-down()    { .icon; &:before { content: @fa-var-circle-arrow-down; }}
.icon-globe()                { .icon; &:before { content: @fa-var-globe; }}
.icon-wrench()               { .icon; &:before { content: @fa-var-wrench; }}
.icon-tasks()                { .icon; &:before { content: @fa-var-tasks; }}

.icon-filter()               { .icon; &:before { content: @fa-var-filter; }}
.icon-briefcase()            { .icon; &:before { content: @fa-var-briefcase; }}
.icon-fullscreen()           { .icon; &:before { content: @fa-var-fullscreen; }}

.icon-group()                { .icon; &:before { content: @fa-var-group; }}
.icon-link()                 { .icon; &:before { content: @fa-var-link; }}
.icon-cloud()                { .icon; &:before { content: @fa-var-cloud; }}
.icon-beaker()               { .icon; &:before { content: @fa-var-beaker; }}
.icon-cut()                  { .icon; &:before { content: @fa-var-cut; }}
.icon-copy()                 { .icon; &:before { content: @fa-var-copy; }}
.icon-paper-clip()           { .icon; &:before { content: @fa-var-paper-clip; }}
.icon-save()                 { .icon; &:before { content: @fa-var-save; }}
.icon-sign-blank()           { .icon; &:before { content: @fa-var-sign-blank; }}
.icon-reorder()              { .icon; &:before { content: @fa-var-reorder; }}
.icon-list-ul()              { .icon; &:before { content: @fa-var-list-ul; }}
.icon-list-ol()              { .icon; &:before { content: @fa-var-list-ol; }}
.icon-strikethrough()        { .icon; &:before { content: @fa-var-strikethrough; }}
.icon-underline()            { .icon; &:before { content: @fa-var-underline; }}
.icon-table()                { .icon; &:before { content: @fa-var-table; }}

.icon-magic()                { .icon; &:before { content: @fa-var-magic; }}
.icon-truck()                { .icon; &:before { content: @fa-var-truck; }}
.icon-pinterest()            { .icon; &:before { content: @fa-var-pinterest; }}
.icon-pinterest-sign()       { .icon; &:before { content: @fa-var-pinterest-sign; }}
.icon-google-plus-sign()     { .icon; &:before { content: @fa-var-google-plus-sign; }}
.icon-google-plus()          { .icon; &:before { content: @fa-var-google-plus; }}
.icon-money()                { .icon; &:before { content: @fa-var-money; }}
.icon-caret-down()           { .icon; &:before { content: @fa-var-caret-down; }}
.icon-caret-up()             { .icon; &:before { content: @fa-var-caret-up; }}
.icon-caret-left()           { .icon; &:before { content: @fa-var-caret-left; }}
.icon-caret-right()          { .icon; &:before { content: @fa-var-caret-right; }}
.icon-columns()              { .icon; &:before { content: @fa-var-columns; }}
.icon-sort()                 { .icon; &:before { content: @fa-var-sort; }}
.icon-sort-down()            { .icon; &:before { content: @fa-var-sort-down; }}
.icon-sort-up()              { .icon; &:before { content: @fa-var-sort-up; }}

.icon-envelope-alt()         { .icon; &:before { content: @fa-var-envelope-alt; }}
.icon-linkedin()             { .icon; &:before { content: @fa-var-linkedin; }}
.icon-undo()                 { .icon; &:before { content: @fa-var-undo; }}
.icon-legal()                { .icon; &:before { content: @fa-var-legal; }}
.icon-dashboard()            { .icon; &:before { content: @fa-var-dashboard; }}
.icon-comment-alt()          { .icon; &:before { content: @fa-var-comment-alt; }}
.icon-comments-alt()         { .icon; &:before { content: @fa-var-comments-alt; }}
.icon-bolt()                 { .icon; &:before { content: @fa-var-bolt; }}
.icon-sitemap()              { .icon; &:before { content: @fa-var-sitemap; }}
.icon-umbrella()             { .icon; &:before { content: @fa-var-umbrella; }}
.icon-paste()                { .icon; &:before { content: @fa-var-paste; }}

.icon-user-md()              { .icon; &:before { content: @fa-var-user-md; }}