使用方法:
1、head引入css文件
<link rel="stylesheet" href="css/style.css">
2、body引入部分
<div id="box" class="box">
<div class="leaf leaf-1"></div>
<div class="leaf leaf-2"></div>
<div class="leaf leaf-3"></div>
<div class="leaf leaf-4"></div>
<div class="leaf leaf-5"></div>
<div class="leaf leaf-6"></div>
<div class="leaf leaf-7"></div>
<div class="leaf leaf-8"></div>
<div class="leaf leaf-9"></div>
<div class="leaf leaf-10"></div>
<div class="leaf leaf-11"></div>
<div class="leaf leaf-12"></div>
<div class="pot"></div>
<div class="shadow"></div>
</div>