我们需要两张大小一样的图片，一张做前面，一张当做反转后的，
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>盒子翻转</title>
<style>
* {
margin: 0;
padding: 0;
/*清除默认的内外边距*/
}
body {
perspective:800px;
/*视距*/
}
div {
width: 1000px;
height: 1000px;
}
div img {
position: absolute;
top: 0;
left: 0;
transition:all 5s;
}
div:hover img {
transform:rotateY(360deg);
}
div img:last-child {
backface-visibility:hidden;
/*不面向屏幕的那一面隐藏*/
}
</style>
</head>
<body>
<div>
<img src="pink.png" >/*图片一*/
<img src="blue.png" >/*图片二*/
</div>
</body>
</html>