HTML
CSS
JavaScript
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>IT书包</title>
</head>
<body>

<div class="demo_box">默认的透视原点%</div>

</body>
</html>
CSS
.demo_box {
    border: 1px solid #3DA5DC;
    background: #a4dcf9;
    height: 100px;
    width: 200px;
    text-align: center;
    color: #fff;
}
.demo_box{
    position:relative;
    background:#4d6ea6;
    margin:100px auto;
    -webkit-animation:demo_box 4s infinite linear;
    -moz-animation:demo_box 4s infinite linear;
}
.demo_box:hover{
    -webkit-animation-play-state:paused;
    -moz-animation-play-state:paused;
}
.mod_run_code{
    -webkit-perspective-origin:right top;
    -moz-perspective-origin:right top;
    -moz-transform-style:preserve-3d;
    -webkit-transform-style:preserve-3d;
    -webkit-transform: perspective(500px);
    -moz-transform: perspective(500px);
}

@-webkit-keyframes demo_box{
    0%{-webkit-transform:rotateX(0deg);}
    100%{-webkit-transform:rotateX(360deg);} 
}
@-moz-keyframes demo_box{
    0%{-moz-transform:rotateX(0deg);}
    100%{-moz-transform:rotateX(360deg);} 
}
JavaScript