net-engine/tedx-brisbane

.clearfix {
  zoom: 1;

  &:before, &:after {
    content: '';
    display: inline-block;
    display: table;
    clear: both;
  }
}

.disabled {
  opacity: .25;
  pointer-events: none;
}

.visible {
  display: block;
  visibility: visible;
  opacity: 1;
  pointer-events: normal;
  width: auto;
  height: auto;
}

.hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
  margin: 0;
  padding: 0;
}