.image {
  width:600px;
  height:200px;
  overflow:hidden;
}
.pane1,.pane2,.pane3,.pane4 {
  height:100%;
  float:left;
  background-image:url('http://img06.deviantart.net/22c0/i/2013/256/a/e/san_francisco_skyline_by_stevendavisphoto-d6m7285.jpg');
  background-size:cover;
}
.pane1 {
  background-position:0 0;
  width:25%;
}
.folder1,.folder2 {
  height:100%;
  float:left;
  -webkit-backface-visibility:hidden;
  -webkit-transition:all 1s linear;
  -webkit-transform-origin:left center;
}
.folder1 {
  width:50%;
  -webkit-transform: perspective(300px) rotateY(90deg);
}
.image:hover .folder1 {
  -webkit-transform: perspective(300px) rotateY(0deg);
}
.black {
  position:absolute;
  top:0;
  left:0;
  right:50%;
  bottom:0;
  background:black;
  opacity:0.5;
  z-index:99;
  -webkit-backface-visibility:hidden;
  transition:opacity 1s linear;
}
.image:hover .black {
  opacity:0;
}
.pane2 {
  background-position:33.33% 0;
  width:50%;
}
.folder2 {
  width:50%;
  -webkit-transform: perspective(150px) rotateY(-90deg);
}
.image:hover .folder2 {
  -webkit-transform: perspective(150px) rotateY(0deg);
}
.folder2 .black {
  right:0;
}
.pane3 {
  background-position:66.67% 0;
  width:100%;
}
.pane4 {
  background-position:100% 0;
  width:25%;
  -webkit-transition:all 1s linear;
  -webkit-transform:translateX(-200%);
}
.image:hover .pane4 {
  -webkit-transform:translateX(0);
}

<div class="image">
  <div class="pane1"></div>
  <div class="folder1">
    <div class="black"></div>
    <div class="pane2"></div>
    <div class="folder2">
      <div class="black"></div>
      <div class="pane3"></div>
    </div>
  </div>
  <div class="pane4"></div>
</div>

我试图使这个折叠效果完美. “pane3”内部折叠的右侧不是用“pane4”的左侧实际排列.有人可以帮我吗我有点新的透视变换.谢谢！