I am currently working on my personal portfolio page and am having problems with the CodePen.io font awesome logo. I currently do not have an issue with the Free Code Camp, Twitter, or Github logos but for some reason the Codepen logo will not show. I included the portion for Free Code Camp as well for reference. Any help is much appreciate.
<a class="btn btn-default btn-lg fcc-btn" href="https://www.freecodecamp.com/stitesr" role="button" target="_blank"><i class="fa fa-fire"></i><span>FreeCodeCamp</span></a>
<a class="btn btn-default btn-lg" href="https://codepen.io/stitesr/" role="button" target="_blank"><i class="fa fa-codepen"></i><span>CodePen</span></a>