1、transform基本方法

1.rotate 旋轉(zhuǎn) deg
rotateX/rotateY/rotateZ
2.translate 平移 px 正值向前移動，負值向后移動
translateX/translateY/translateZ
3.skew 斜切 deg
skewX/skew 正值是拉左上角和右下角厦凤，負值拉右上角和左下角
4.scale 縮放（原始大小的多少倍）
scaleX/scaleY
5.perspective 景深
perspective 屬性定義 3D 元素距視圖的距離梦鉴，以像素計。

rotate,skew,scale都是圍繞著元素的中心點進行變化

2筋讨、transform的執(zhí)行順序

transform的執(zhí)行順序赛糟，后寫的動畫先執(zhí)行

3派任、變化原點

transform-origin 變化原點center center。關(guān)鍵字：bottom璧南、top掌逛、center、left司倚，right豆混，長度單位（px、em动知、rem）皿伺，會受到影響的屬性有rotate、skew盒粮、scale

4鸵鸥、3D盒子

制作3D盒子代碼：

<div id="wrap">
  <div id="box">
    <span>前</span>
    <span>右</span>
    <span>后</span>
    <span>左</span>
    <span>上</span>
    <span>下</span>
  <div>
</div>
<style>
#wrap {
  width: 100px;
  height: 100px;
  border: 1px solid #000;
  padding: 100px;
  -webkit-perspective: 300px;
  perspective: 300px;
}
#box{
  width: 100px;
  height: 100px;
  color: #fff;
  font-size: 50px;
  line-height: 100px;
  text-align: center;
  position: relative;
  -webkit-transform-style:preserve-3d;
  transform-style:preserve-3d;
  -webkit-transform: translateZ(-50px) rotateY(0deg);
  transform: translateZ(-50px) rotateY(0deg);
  transition:5s;
}
#box span{
  position: absolute;
  left: 0;
  top: 0;
  width: 100px;
  height: 100px;
  transition: 5s;
}
#box span:nth-of-type(1){
  background:red;
  -webkit-transform:rotate(0deg) translateZ(50px);
  transform:rotate(0deg) translateZ(50px);
}
#box span:nth-of-type(2){
  background: yellow;
  -webkit-transform: rotateY(90deg) translateZ(50px);
  transform: rotateY(90deg) translateZ(50px);
}
#box span:nth-of-type(3){
  background: blue;
  -webkit-transform: rotateY(180deg) translateZ(50px);
  transform: rotateY(180deg) translateZ(50px);
}
#box span:nth-of-type(4){
  background: green;
  -webkit-transform: rotateY(270deg) translateZ(50px);
  transform: rotateY(270deg) translateZ(50px);
}
#box span:nth-of-type(5){
  background: pink;
  -webkit-transform: rotateX(90deg) translateZ(50px);
  transform: rotateX(90deg) translateZ(50px);
}
#box span:nth-of-type(6){
  background: #000;
  -webkit-transform: rotateX(-90deg) translateZ(50px);
  transform: rotateX(-90deg) translateZ(50px);
}
</style>
<script>
window.onload=function(){
  var box=document.querySelector('#box');
  box.style.WebkitTransform=box.style.transform='translateZ(-50px) rotateY(360deg)';
}
</script>