.lbt-box {
  position: relative;
  width: 1260px;
  height: 600px;
  margin: 0 auto;
}

.imgs {
  width: 100%;
  height: 100%;
  perspective: 1000px;
}

.imgitem {
  position: absolute;
  width: 400px;
  height: 500px;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  z-index: 0;
  transition: 0.8s;
  opacity: 0;
}

.imgitem img {
  width: 100%;
  height: 100%;
}

.cur-img {
  width: 800px;
  z-index: 100;
  opacity: 1;
}

.pre-img {
  transform: translateX(-400px) rotateY(30deg) scale(0.8);
  z-index: 9;
  opacity: 0.9;
}

.next-img {
  transform: translateX(400px) rotateY(-30deg) scale(0.8);
  z-index: 9;
  opacity: 0.9;
}