/*********************************************
 * CONTROLS
 *********************************************/
.reveal .controls {
  display: none;
  position: fixed;
  width: 180px;
  height: 180px;
  z-index: 30;
  right: 10px;
  bottom: 10px;
  -webkit-user-select: none; }

.reveal .controls button {
  padding: 0;
  position: absolute;
  opacity: 0.05;
  width: 0;
  height: 0;
  background-color: transparent;
  border: 24px solid transparent;
  -webkit-transform: scale(0.9999);
      -ms-transform: scale(0.9999);
          transform: scale(0.9999);
  -webkit-transition: all 0.2s ease;
          transition: all 0.2s ease;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent; }

.reveal .controls .enabled {
  opacity: 0.7;
  cursor: pointer; }

.reveal .controls .enabled:active {
  margin-top: 1px; }

.reveal .controls .navigate-left {
  top: 42px;
  border-right-width: 44px;
  border-right-color: #000; }

.reveal .controls .navigate-left.fragmented {
  opacity: 0.3; }

.reveal .controls .navigate-right {
  left: 94px;
  top: 42px;
  border-left-width: 44px;
  border-left-color: #000; }

.reveal .controls .navigate-right.fragmented {
  opacity: 0.3; }

.reveal .controls .navigate-up {
  left: 42px;
  border-bottom-width: 22px;
  border-bottom-color: #000; 
  opacity: 0.0;
  pointer-events: none; }

.reveal .controls .navigate-up.fragmented {
  opacity: 0.0; }

.reveal .controls .navigate-down {
  left: 42px;
  top: 74px;
  border-top-width: 22px;
  border-top-color: #000;
  opacity: 0.0;
  pointer-events: none; }

.reveal .controls .navigate-down.fragmented {
  opacity: 0.0; }