特效描述：纯css3 创意的方块翻滚 404页面特效，纯css3 404页面、创意的方块翻滚动画。
代码结构
1. HTML代码
<div class="rail">
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
<div class="stamp four">4</div>
<div class="stamp zero">0</div>
</div>
<div class="world">
<div class="forward">
<div class="box">
<div class="wall"></div>
<div class="wall"></div>
<div class="wall"></div>
<div class="wall"></div>
<div class="wall"></div>
<div class="wall"></div>
</div>
</div>
</div>
