.series {
  text-decoration: underline;
}

.series:hover {
  cursor: pointer;
  font-weight: bold;
}

.btn-command {
  margin-bottom: 25px;
  margin-top: 25px;
}

.card {
  display: block;
  height: 3em;
  margin-bottom: 25px;
  margin-top: 25px;

  width: 100%;
  text-align: center;
  font-size: 3em;
}

/* entire container, keeps perspective */
.flip-container {
  perspective: 1000;
  -webkit-perspective: 1000;
}
/* flip the pane when hovered */
.flip-container.flip .flipper {
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
}

/* flip speed goes here */
.flipper {
  transition: 0.6s;
  -webkit-transition: 0.6s;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  position: relative;
}

/* hide back of pane during swap */
.front, .back, .front-success {
  width: 100%;
  /*min-height: 150px;*/
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;

  text-align: center;
  padding: 25px;
  border: 1px solid black;
}


.front-success {
  z-index: 3;
  transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
}

/* front pane, placed above back */
.front {
  z-index: 2;
  transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
}

/* back, initially hidden pane */
.back {
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
}

footer {
  text-align: center;
}