To Ada the Pure CSS Fork Me on Github ribbon to you project you simple include the CSS
files:
<!-- CSS RIBBON STYLES LINK -->
<link rel="stylesheet" href="gh-fork-ribbon.css">
<!--[if lt IE 9]>
<link rel="stylesheet" href="gh-fork-ribbon.ie.css">
<![endif]-->
<!-- END HERE -->
The on your page add the ribbon:
<!-- TOP RIGHT RIBBON: START -->
<div class="github-fork-ribbon-wrapper right">
<div class="github-fork-ribbon">
<a href="https://github.com/simonwhitaker/github-fork-ribbon-css">Fork me on GitHub</a>
</div>
</div>
<!-- TOP RIGHT RIBBON: END -->