#f1_container {
  position: relative;
  margin: 10px auto;
  width: 296px;
  height: 460px;
  z-index: 1;
}
#f1_container {
  perspective: 1000;
}
#f1_card {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: all 1.0s linear;
}
#f1_container:hover #f1_card {
  transform: rotateY(180deg);
}
#f2_container {
  position: relative;
  margin: 10px auto;
  width: 296px;
  height: 460px;
  z-index: 1;
}
#f2_container {
  perspective: 1000;
}
#f2_card {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: all 1.0s linear;
}
#f2_container:hover #f2_card {
  transform: rotateY(180deg);
}
#f3_container {
  position: relative;
  margin: 10px auto;
  width: 296px;
  height: 460px;
  z-index: 1;
}
#f3_container {
  perspective: 1000;
}
#f3_card {
  width: 296px;
  height: 460px;
  transform-style: preserve-3d;
  transition: all 1.0s linear;
}
#f3_container:hover #f3_card {
  transform: rotateY(180deg);
}
.face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}
.face.back {
  display: block;
  transform: rotateY(180deg);
  box-sizing: border-box;
  padding: 0;
  color: white;
  text-align: center;
}