.card {
  display: block;
  position: relative; 
  padding-bottom: 0.72em;
  font-size: inherit;
  line-height: 0.95;
}

.card__top,
.card__bottom,
.card__back::before,
.card__back::after {
  display: block;
  height: 0.72em;
  color: #ccc;
  background: #222;
  padding: 0.25em 0.25em;
  border-radius: 0.15em 0.15em 0 0;
  backface-visiblity: hidden;
  transform-style: preserve-3d;
  width: 1.8em;
  transform: translateZ(0);
}

.card__bottom { 
  color: #FFF;
  position: absolute;
  top: 50%;
  left: 0;
  border-top: solid 1px #000;
  background: #393939; 
  border-radius: 0 0 0.15em 0.15em; 
  pointer-events: none;
  overflow: hidden;
}

.card__bottom::after {
  display: block;
  margin-top: -0.72em;
}

.card__back::before,
.card__bottom::after {
  content: attr(data-value);
}

.card__back {
  position: absolute;
  top: 0;
  height: 100%;
  left: 0%;
  pointer-events: none;
}

.card__back::before {
  position: relative;
  z-index: -1;
  overflow: hidden;
}

.flip .card__back::before {
  animation: flipTop 0.3s cubic-bezier(.37,.01,.94,.35);
  animation-fill-mode: both;
  transform-origin: center bottom;
}

.flip .card__back .card__bottom {
  transform-origin: center top;
  animation-fill-mode: both;
  animation: flipBottom 0.6s cubic-bezier(.15,.45,.28,1); 
}

.flip-clock__slot{
    position: absolute;
    bottom: 15%;
    right: 2%;
    font-size: 24px;
    color: #fff;
    z-index: 10;
}
@keyframes flipTop {
  0% {
    transform: rotateX(0deg);
    z-index: 2;
  }
  0%, 99% {
    opacity: 0.99;
  }
  100% {
    transform: rotateX(-90deg);
    opacity: 0;
  }
}

@keyframes flipBottom {
  0%, 50% {
    z-index: -1;
    transform: rotateX(90deg);
    opacity: 0;
  }
  51% {
    opacity: 0.99;
  }
  100% {
    opacity: 0.99;
    transform: rotateX(0deg);
    z-index: 5;
  }
}

@media (max-width: 767px) {
    .card {
        
    }

    .flip-clock__slot{
        
    }

    main {
        background-image: url('/assets/default/images/campaign/bg-mobile-vf-dark.jpg');
        background-position: 50%;
    }
    .overlay{
        background: rgba(0,0,0,0.5);
    }

    main > .container > :first-child{
        margin-bottom: auto;
    }
    main > .container > :last-child{
        margin-top: auto;
    }
}

@media (max-width: 480px) {
    .card {
        
    }

    .flip-clock__slot{
        
    }
}