Font-face less mixin

fontface.less

.include-custom-font(@family: arial, @file: arial, @weight: normal, @style: normal){
  @font-face{
    font-family: @family;
    src:url('/fonts/@{file}.eot');
    src:url('/fonts/@{file}.eot?#iefix') format('embedded-opentype'),
    url('/fonts/@{file}.woff') format('woff'),
    url('/fonts/@{file}.ttf') format('truetype'),
    url('/fonts/@{file}.svg#icon') format('svg');
    font-weight: @weight;
    font-style: @style;
  }
}