.card-container {
  perspective: 1000px;
  -webkit-perspective: 1000px;
  -moz-perspective: 1000px;
  transform-style: preserve-3d;
}
.card-container.flipped .front {
  transform: rotateY(180deg);
}
.card-container.flipped .back {
  transform: rotateY(360deg);
}
.card-container, .front, .back {
  width: 100%;
  height: 150px;
}
.flipper {
  transform-style: preserve-3d;
  position: relative;
}
.front, .back {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  transition: 1s;
  transform-style: preserve-3d;
  position: absolute;
  top: 0;
  left: 0;
}
.front {
  z-index: 2;
  transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
  -ms-transform: rotateY(0deg);
  -moz-transform: rotateY(0deg);
}
.back {
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
  -ms-transform: rotateY(180deg);
  -moz-transform: rotateY(180deg);
}

/*.panel{background: #fff;height: 400px;}*/

.prev-btn, .next-btn {
    display: inline-block;
    margin: 20px;
    width: 35px;
    height: 25px;
    line-height: 25px;
    background: #111b8f;
    border: 1px solid #444;
    text-align: center;
    font-size: 22px;
    color: #cbc2c2;
    -webkit-transition: all 200ms ease-in-out;
    -moz-transition: all 200ms ease-in-out;
    -ms-transition: all 200ms ease-in-out;
    -o-transition: all 200ms ease-in-out;
    transition: all 200ms ease-in-out;
}
.panel-heading{font-size: 20px;margin-top: 10px;}
.panel{background: #fff;height: 400px;}
.panel-body p{font-size: 28px;line-height: 40px;margin-top: 90px;}
.panel-footer{margin-top: 60px;}
p::first-letter {
    text-transform:capitalize;
}