.card {
  width: 300px;
  height: 200px;
  float: left;
  perspective: 500px;
}

.content {
  width: 100%;
  height: 100%;
  box-shadow: 0 0 15px rgba(0.5,0,0,0.5);
  transition: transform 1s;
  transform-style: preserve-3d;
}

.card:hover .content {
  transform: rotateY( 180deg ) ;
  transition: transform 0.5s;
}

.front,
.back {
  position: absolute;
  height: 100%;
  width: 100%;
  background: white;
  line-height: 25px;
  color: #03446A;
  text-align: center;
  font-size: 14px;
  border-radius: 5px;
  backface-visibility: hidden;
}

.back {
  background: #ffffff;
  color: black;
  transform: rotateY( 180deg );
}