小编Ste*_*oto的帖子

.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) …