立体轮播图效果展示

HTML代码
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
.block {
position: relative;
width: 900px;
height: 370px;
margin: 0 auto;
overflow: hidden;
}
.imagePar > div {
position: absolute;
width: 400px;
height: 200px;
transition: all 0.5s linear;
}
.imagePar > div:nth-child(1) {
top: 150px;
left: 250px;
z-index: 6;
}
.imagePar > div:nth-child(2) {
top: 100px;
left: 0;
z-index: 5;
}
.imagePar > div:nth-child(3) {
top: 50px;
left: 0;
z-index: 4;
}
.imagePar > div:nth-child(4) {
top: 0;
left: 250px;
z-index: 3;
}
.imagePar > div:nth-child(5) {
top: 50px;
left: 500px;
z-index: 4;
}
.imagePar > div:nth-child(6) {
top: 100px;
left: 500px;
z-index: 5;
}
.imagePar > div > img {
width: 400px;
height: 200px;
}
.imagePar{
position: relative;
width: 900px;
height: 350px;
}
.btn{
width: 900px;
height: 40px;
position: absolute;
top: 155px;
z-index: 10;
}
.btn>span:nth-child(1){
width: 30px;