.statistics {
  position: relative;
  height: 2.6667em;
  border: 1px solid #dedede;
  border-radius: 5px;
  background: #fff;
  /**
     * 3D box effect technique
     *
     * http://codepen.io/rachsmith/pen/cojza
     */
}
.statistics .box3d {
  perspective: 1000px;
  overflow: hidden;
  border-radius: 5px 5px 0 0;
  padding: 0 1.5em;
}
.statistics .box3d .toppanel,
.statistics .box3d .bottompanel {
  transform-origin: 50% 0;
  transition-delay: 125ms;
  /**
             * this timing function from
             * http://codepen.io/sbchewitt/pen/KpPZMx
             */
  transition: all 0.5s cubic-bezier(0.57, -0.42, 0.46, 1.4);
}
.statistics .box3d .toppanel {
  position: relative;
  transform-style: preserve-3d;
  background: #fff;
}
.statistics .box3d .bottompanel {
  transform: rotateX(-90deg) translateZ(0);
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 100%;
  background: #999;
}
.statistics .box3d.focusstate .toppanel {
  transform: rotateX(90deg) translateY(-22px);
  transition-delay: 0s;
}
.statistics .box3d.focusstate .bottompanel {
  background: #fff;
  transition-delay: 0s;
}
.statistics .box3d .navbar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: space-around;
  padding: 0.5em;
}
.statistics .box3d .navbar .navitem {
  flex: 0 1 auto;
}
.statistics .box3d .navbar .navitem a {
  color: #222;
  text-decoration: none;
}
.statistics .box3d .repo .navitem:hover a {
  color: #4183c4;
}
.statistics .box3d .lang .navitem::before {
  background-color: currentColor;
  content: '';
  display: inline-block;
  width: 0.75em;
  height: 0.75em;
  border-radius: 50%;
  vertical-align: middle;
  margin: 0 0.25em 2px 0;
  cursor: pointer;
}
.statistics .box3d .lang .navitem::after {
  content: attr(data-percent);
  margin-left: 0.5em;
  color: #555;
}
.statistics .underbar {
  position: absolute;
  left: 0;
  padding-top: 5px;
  height: 8px;
  width: 100%;
  bottom: 0;
  display: flex;
  cursor: pointer;
  border-radius: 0 0 5px 5px;
  overflow: hidden;
  opacity: 0.6;
  transition: all 0.5s cubic-bezier(0.57, -0.42, 0.46, 1.4);
}
.statistics .underbar:hover {
  opacity: 0.8;
}
.statistics .underbar span {
  font-size: 0;
  background-color: currentColor;
}
.statistics .box3d.focusstate ~ .underbar,
.statistics .underbar:hover {
  opacity: 1;
  padding: 0;
  padding-top: 3px;
}