Instructions
<head>
...
<link rel="stylesheet" type="text/css" href="your_website_domain/css_root/fileicon.css">
...
</head>
3Use the icon class on "display: inline" elements:
Use example: <i class="fileicon-airplane49"></i> or <span class="fileicon-airplane49"></span>
Under CC: Retinaicons
<i class="fileicon-ae"></i>
<i class="fileicon-agenda"></i>
<i class="fileicon-ai"></i>
<i class="fileicon-ai-1"></i>