.fab-container {
  width: 250px;
  height: 60px;
  position: fixed;
  right: 10px;
  bottom: 10px;
  background: transparent;
  border-radius: 6px;
  -webkit-transition: 0.5s ease;
  transition: 0.5s ease;
  -webkit-transform: rotateX(0deg);
          transform: rotateX(0deg);
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}
.fab-container:hover {
  -webkit-transform: rotateX(-180deg);
          transform: rotateX(-180deg);
}
.fab-container .btn-fab {
  box-sizing: border-box;
  width: 250px;
  height: 60px;
  background: #fff;
  border-radius: 6px;
  text-transform: uppercase;
  font-size: 20px;
  letter-spacing: 4px;
  line-height: 60px;
  text-align: center;
  position: absolute;
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  z-index: 2;
  -webkit-transform: rotateX(0deg);
          transform: rotateX(0deg);
  background-repeat: no-repeat;
  background-position: 72px center;
  color: #212c3f;
}
.fab-container .back {
  box-sizing: border-box;
  width: 250px;
  height: 60px;
  border-radius: 6px;
  position: absolute;
  background: #fff;
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  -webkit-transform: rotateX(180deg);
          transform: rotateX(180deg);
  display: -webkit-box;
  display: flex;
  -webkit-box-align: center;
          align-items: center;
  -webkit-box-pack: justify;
          justify-content: space-between;
  padding: 0 22px;
}
.fab-container .back .fa {
  font-size: 24px;
  -webkit-transition: background-color 0.3s ease;
  transition: background-color 0.3s ease;
}
.fab-container .back .fa:hover {
  cursor: pointer;
}