Allows for using symbols as footnote placeholders in WP-Bigfoot plugin.

bigfoot-default.css

.footnote-button {
  position: relative;
  z-index: 5;
  top: -0.3em;
  box-sizing: border-box;
  display: inline-block;
  padding: 0.4em;
  margin: 0 0.1em 0 none;
  border: none;
  border-radius: 0.3em;
  cursor: pointer;
  opacity: 1;
  background-color: none;
  line-height: 0;
  vertical-align: middle;
  text-decoration: none;
  -webkit-transition-property: opacity;
  -moz-transition-property: opacity;
  -ms-transition-property: opacity;
  transition-property: opacity;
  -webkit-transition-duration: 0.25s;
  -moz-transition-duration: 0.25s;
  -ms-transition-duration: 0.25s;
  transition-duration: 0.25s; }
  .footnote-button:hover {
    opacity: 1; }
  .footnote-button:active {
    opacity: 1; }
  .footnote-button.active {
    opacity: 1;
    -webkit-transition-delay: 0.15s;
    -moz-transition-delay: 0.15s;
    -ms-transition-delay: 0.15s;
    transition-delay: 0.15s; }

@font-awesome {
    font-family: FontAwesome;
    src: url(/wp-content/plugins/font-awesome-4-menus/css/font-awesome.css);
}

.footnote-button:before {
  content: "\f0c3";
  position: absolute;
  bottom: 0.6em;
  left: 0;
  right: 0;
  display: block;
  font-size: none;
  color: black;
  font-family: FontAwesome;
  font-weight: normal;
  font-style: normal;
  line-height: 0;
  text-align: center; }

.footnote-button:hover:before {
  color: #448844; }

.footnote-content {
  position: fixed;
  z-index: 10;
  bottom: auto;
  left: auto;
  font-size: 100%;
  box-sizing: border-box;
  max-width: 90%;
  margin: 1.21924em auto;
  display: inline-block;
  -webkit-transform: scale(0.1) translateZ(0);
  -moz-transform: scale(0.1) translateZ(0);
  -ms-transform: scale(0.1) translateZ(0);
  transform: scale(0.1) translateZ(0);
  -webkit-transform-origin: 50% 0;
  -moz-transform-origin: 50% 0;
  -ms-transform-origin: 50% 0;
  transform-origin: 50% 0;
  background: #f3fef3;
  opacity: 0;
  border-radius: 0.5em;
  border: 1px solid #c3c3c3;
  box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.3);
  -webkit-transition-property: opacity, -webkit-transform;
  -moz-transition-property: opacity, -moz-transform;
  -ms-transition-property: opacity, -ms-transform;
  transition-property: opacity, transform;
  -webkit-transition-duration: 0.25s;
  -moz-transition-duration: 0.25s;
  -ms-transition-duration: 0.25s;
  transition-duration: 0.25s; }
  .footnote-content.active {
    -webkit-transform: scale(1) translateZ(0);
    -moz-transform: scale(1) translateZ(0);
    -ms-transform: scale(1) translateZ(0);
    transform: scale(1) translateZ(0);
    opacity: 0.97; }
  .footnote-content.bottom {
    -webkit-transform-origin: top;
    -moz-transform-origin: top;
    -ms-transform-origin: top;
    transform-origin: top; }
  .footnote-content.top {
    -webkit-transform-origin: bottom;
    -moz-transform-origin: bottom;
    -ms-transform-origin: bottom;
    transform-origin: bottom; }
  .footnote-content.scrollable:after {
    content: '...';
    position: fixed;
    bottom: 0.45em;
    right: 50%;
    z-index: 20;
    width: 1.5em;
    margin-right: -0.75em;
    opacity: 1;
    background-color: #f3fef3;
    font-family: Georgia;
    font-weight: bold;
    font-size: 1.8em;
    text-align: center;
    color: rgba(0, 0, 0, 0.08);
    line-height: 0;
    -webkit-transition-property: opacity;
    -moz-transition-property: opacity;
    -ms-transition-property: opacity;
    transition-property: opacity;
    -webkit-transition-duration: 0.25s;
    -moz-transition-duration: 0.25s;
    -ms-transition-duration: 0.25s;
    transition-duration: 0.25s;
    -webkit-transition-delay: 0.4s;
    -moz-transition-delay: 0.4s;
    -ms-transition-delay: 0.4s;
    transition-delay: 0.4s; }
  .footnote-content.scrollable.fully-scrolled:after {
    opacity: 0;
    -webkit-transition-delay: 0s;
    -moz-transition-delay: 0s;
    -ms-transition-delay: 0s;
    transition-delay: 0s; }
  .footnote-content.scrollable .footnote-main-wrapper:before, .footnote-content.scrollable .footnote-main-wrapper:after {
    content: ' ';
    position: absolute;
    width: 100%;
    z-index: 12; }
  .footnote-content.scrollable .footnote-main-wrapper:before {
    top: -1px;
    left: 0;
    height: 1.1em;
    border-radius: 0.5em 0.5em 0 0;
    background: #f3fef3;
    background: -moz-linear-gradient(top, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #f3fef3), color-stop(50%, #f3fef3), color-stop(100%, rgba(243, 254, 243, 0)));
    background: -webkit-linear-gradient(top, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: -o-linear-gradient(top, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: -ms-linear-gradient(top, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: linear-gradient(to bottom, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%); }
  .footnote-content.scrollable .footnote-main-wrapper:after {
    bottom: -1px;
    left: 0;
    height: 1.2em;
    border-radius: 0 0 0.5em 0.5em;
    background: #f3fef3;
    background: -moz-linear-gradient(bottom, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: -webkit-gradient(linear, left bottom, left top, color-stop(0%, #f3fef3), color-stop(50%, #f3fef3), color-stop(100%, rgba(243, 254, 243, 0)));
    background: -webkit-linear-gradient(bottom, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: -o-linear-gradient(bottom, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: -ms-linear-gradient(bottom, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%);
    background: linear-gradient(to top, #f3fef3 0%, #f3fef3 50%, rgba(243, 254, 243, 0) 100%); }
  .footnote-content ::-webkit-scrollbar {
    display: none; }

.footnote-main-wrapper {
  position: relative;
  z-index: 14;
  box-sizing: border-box;
  overflow: hidden;
  margin: 0;
  max-width: 22em;
  background-color: #f3fef3;
  border-radius: 0.5em;
  -webkit-transition-property: max-height;
  -moz-transition-property: max-height;
  -ms-transition-property: max-height;
  transition-property: max-height;
  -webkit-transition-duration: 0.25s;
  -moz-transition-duration: 0.25s;
  -ms-transition-duration: 0.25s;
  transition-duration: 0.25s; }

.footnote-content-wrapper {
  position: relative;
  z-index: 8;
  max-height: 15em;
  padding: 1.1em 1.3em 1.2em;
  box-sizing: border-box;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  background: #f3fef3;
  border-radius: 0.5em; }
  .footnote-content-wrapper img {
    max-width: 100%; }
  .footnote-content-wrapper *:last-child {
    margin-bottom: 0; }
  .footnote-content-wrapper *:first-child {
    margin-top: 0; }

.tooltip {
  position: absolute;
  z-index: 12;
  box-sizing: border-box;
  margin-left: -0.65em;
  width: 1.3em;
  height: 1.3em;
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
  background: #f3fef3;
  border: 1px solid #c3c3c3;
  box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.3);
  border-top-left-radius: 0; }

.bottom .tooltip {
  top: -0.65em;
  bottom: auto; }

.top .tooltip {
  bottom: -0.65em;
  top: auto; }