<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
body {
perspective: 400px;
}
.box {
position: relative;
width: 300px;
height: 300px;
margin: 100px auto;
transition: all .4s;
/* 让背面的紫色盒子保留立体空间 给父级添加的 */
transform-style: preserve-3d;
}
.box:hover {
transform: rotateY(180deg);
}
.front,
.back {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
border-radius: 50%;
font-size: 30px;
color: #fff;
text-align: center;
line-height: 300px;
}
.front {
background-color: pink;
z-index: 1;
}
.back {
background-color: purple;
/* 像手机一样 背靠背 旋转 */
transform: rotateY(180deg);
}
</style>
</head>
<body>
<div class="box">
<div class="front">黑马程序员</div>
<div class="back">pink老师这里等你</div>
</div>
</body>
</html>
