3d導航

這是一個純css3的3d導航，簡單粗暴，通俗易懂

HTML：
<ul class="box">
    <li><span>大劫案</span><span>是假的</span></li>
     <li><span>大劫案</span><span>是假的</span></li>
     <li><span>大劫案</span><span>是假的</span></li
 
>
 </ul>

css:
.box{width: 700px;height: 50px;border:1px solid #ccc;margin:100px auto;overflow:hidden;}
.box li{width: 100px;height: 50px;line-height: 50px;text-align:center;float: left;transition:all 1s;transform-style:preserve-3d;position:relative;}
.box span{display:block;width: 100px;line-height: 50
 
px;text-align:center;position:absolute;left:0;top:0;}
.box span:nth-child(1){transform:translateZ(25px);background:pink;}
.box span:nth-child(2){transform:rotateX(90deg)translateZ(25px);background:blue;}
.box li:hover{transform:rotateX(-90deg);}