CSS3翻转显示另外一张图：
1、backface-visibility:hidden;背面不可见
2、transform:rotate();旋转
（可以把图片换成本地图片看一下效果）
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
}
.box {
560px;
height: 300px;
position: relative;
margin: 100px auto;
}
.front {
100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
}
.back {
position: absolute;
top: 0;
left: 0;
}
img {
transition: all 1s ease 0s;
backface-visibility: hidden;/*背面不可见*/
}
.back img {
transform: rotateX(180deg);/*背面的图先天翻转180deg*/
}
.box:hover .front img{
transform: rotateX(180deg);
}
.box:hover .back img {
transform: rotateX(360deg);
}
</style>
</head>
<body>
<div class="box">
<div class="front">
<img src="dog/0.jpg" alt="">
</div>
<div class="back">
<img src="dog/1.jpg" alt="">
</div>
</div>
</body>
</html>