.flip-card {
  background-color: transparent;
  width: 300px;
  height: 300px;
  perspective: 1000px;
  transition: all 200ms linear;
}
.person {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  -webkit-transition: transform 0.6s;
  -moz-transition: transform 0.6s;
  transform-style: preserve-3d;
  box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}
.flip-card-inner {
  transition: transform 0.6s;
  -webkit-transition: transform 0.6s;
  -moz-transition: transform 0.6s;
  transform-style: preserve-3d;
}

.flip-card:hover {
  cursor: pointer
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}

.flip-card-front {
}

.flip-card-back {
  background-color: #f9f9f9;
  /*color: #999;*/
  transform: rotateY(180deg);
}