必须加这个属性：transform-style: preserve-3d;
perspective: 900px; 设置了景深才能感到近大远小的感觉
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.box{
width: 500px;
height: 500px;
border: 5px solid black;
transform-style: preserve-3d;
/*
必加transform-style: preserve-3d;
默认是flat:2d;
*/
position: relative;
margin: 0 auto;
/* transform: rotateY(30deg);*/
perspective: 900px;
/* 设置景深 */
}
.center{
position:absolute;
width: 200px;
height: 200px;
background: red;
left: 50%;
top: 50%;
margin-left: -100px;
margin-top: -100px;
transition: all 3s;
}
.box:hover .center{
/* transform: translateZ(800px); */
transform: translate3d(0,0,200px);
/* 正值朝前，负值朝后 */
}
</style>
</head>
<body>
<div class="box">
<div class="center"></div>
</div>
</body>
</html>transform: translateZ(80px); 等于transform: translate3d(0,0,80px);，里面的参数对应x,y,z轴
标签：translate3d,preserve,style,transform,-----,200px,3d From： https://blog.csdn.net/weixin_58694594/article/details/141403568