.flipbook {
  width: 100vw;
  height: 100vh;
  background: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.flipbook-page {
  width: 100vw;
  height: 100vh;
  /* overflow: hidden; */
}

.flipbook-page img {
  object-fit: contain;
  width: 100%;
  height: 100%;
}

.stf__parent {
  position: relative;
  display: block;
  box-sizing: border-box;
  transform: translateZ(0);

  -ms-touch-action: pan-y;
  touch-action: pan-y;
}

.sft__wrapper {
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.stf__parent canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}

.stf__block {
  position: absolute;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  perspective: 2000px;
}

.stf__item {
  display: none;
  position: absolute;
  transform-style: preserve-3d;
}

.stf__outerShadow {
  position: absolute;
  left: 0;
  top: 0;
}

.stf__innerShadow {
  position: absolute;
  left: 0;
  top: 0;
}

.stf__hardShadow {
  position: absolute;
  left: 0;
  top: 0;
}

.stf__hardInnerShadow {
  position: absolute;
  left: 0;
  top: 0;
}