pure css for a simple flipping card

dual-flipped.css

/* <div class="dual"><div class="box"><div onclick="this.parentElement.classList.add('flipped')">current</div><div onclick="this.parentElement.classList.remove('flipped')">current</div></div></div> */
.dual {
  max-width: 100%;
  position: relative;
  margin: 2rem 0;
  perspective: 1280px;
}

.dual:hover {
  z-index: 999;
}

.dual>.box {
  width: 100%;
  height: 256px;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 1.5s ease 0s;
}

.dual>.box>div {
  display: block;
  position: absolute;
  top: 0;
  -webkit-backface-visibility: hidden !important;
  backface-visibility: hidden !important;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: pointer;
}

.dual>.box>div:hover {
  box-shadow: 0 6px 12px 4px rgba(66, 120, 218, 0.2);
  border-radius: 6px;
}

.dual>.box>div:active {
  box-shadow: 0 3px 6px 2px rgba(66, 120, 218, 0.1);
  border-radius: 6px;
  margin-top: 2px;
}

.dual>.box>div:last-child {
  transform: rotateY(-180deg);
}

.dual>.box.flipped {
  transform: rotateY(180deg);
}

.dual>.box>div * {
  pointer-events: none;
}