Instructions
<head>
...
<link rel="stylesheet" type="text/css" href="your_website_domain/css_root/essential.css">
...
</head>
3Use the icon class on "display: inline" elements:
Use example: <i class="essential-airplane49"></i> or <span class="essential-airplane49"></span>
Under CC: Madebyoliver
<i class="essential-add"></i>
<i class="essential-add-1"></i>
<i class="essential-add-2"></i>
<i class="essential-add-3"></i>