<!DOCTYPE html><html><head>?? ?<meta charset="UTF-8">?? ?<title>設置3D場景</title>?? ?<style>?? ??? ?#experiment{?? ??? ??? ?perspective: 800px;?? ??? ??? ?perspective-origin:50% 50%;?? ??? ??? ?transform-style:preserve-3d;?? ??? ?}?? ??? ?#block{?? ??? ??? ?width:500px;?? ??? ??? ?height:500px;?? ??? ??? ?background-color:#69c;?? ??? ??? ?margin:100px auto;?? ??? ??? ?transform:rotateX(45deg);?? ??? ?}?? ?</style></head><body>?? ?<div id="experiment">?? ??? ?<div id="block">?? ??? ??? ??? ??? ?</div>?? ?</div></body></html>
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