#a {
perspective:800px;
width:500px;
height: 500px;
margin: auto;
margin-top: 100px;
}
#b {
transform-style:preserve-3d;
}
#b > div {
position: absolute;
}
#b > div:nth-of-type(1) {
width:100px;
height: 100px;
background: #0f0;
transform:translateZ(30px);
}
#b > div:nth-of-type(2) {
width: 100px;
height: 100px;
background: #f00;
transform:translateZ(-10px);
}<body> <div id="a"> <div id="b"> <div></div> <div></div> </div> </div> </body>
translateZ之后就变成绿色框在上面,所以translateZ是不是有改变层叠顺序的能力?