Font Awesome experiments

HTML

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<div class="share-results">
    <a class="fa-stack fa-1x" data-toggle="tooltip" title="Share by Email" data-placement="top" href="#">
        <i class="fa fa-envelope-square fa-stack-2x"></i>
    </a>
    <a class="fa-stack fa-1x" data-toggle="tooltip" title="Share on Facebook" data-placement="top" href="">
        <i class="fa fa-facebook-square fa-stack-2x"></i>
    </a>
    <a class="fa-stack fa-1x" data-toggle="tooltip" title="Share on Twitter" data-placement="top" href="">
        <i class="fa fa-twitter-square fa-stack-2x"></i>
    </a>
    <a class="fa-stack fa-1x" data-toggle="tooltip" title="Share by Link" data-placement="top" href="#">
        <i class="fa fa-square fa-stack-2x"></i>
        <i class="fa fa-inverse fa-link fa-stack-1x"></i>
    </a>
</div>
<br />
<div class="fa-stack fa-1x">
  <a class="fa fa-calendar-o fa-stack-2x"></a>
  <strong class="fa-stack-1x calendar-text">27</strong>
</div>
<br /><br />
<div>
    <i class="fa fa-camera-retro fa-4x"></i> Shopping cart
</div>

<li>
    <a href="#" id="showEICodes2">
<span class="fau fa fa-stack fa-1x" style="vertical-align: top;">
    <i class="fa fa-long-arrow-right fa-stack-1x"></i>
    <i class="fa fa-columns fa-stack-2x"></i>
</span>
<span class="nav-text">
    EI Codes2
</span>
    </a>
</li>
<li>
    <a href="#" id="showEICodes2">
<span class="fau fa fa-stack fa-1x" style="vertical-align: top;">
    <i class="fa fa-long-arrow-right fa-stack-1x"></i>
    <i class="fa fa-columns fa-stack-1x"></i>
</span>
<span class="nav-text">
    EI Codes3
</span>
    </a>
</li>

CSS

a.fa {
    text-decoration: none;
}
.fa-stack { margin: -2px; }
a:link { color: #000000; }
a:visited { color: #2C8DCB; }

.calendar-text { 
    margin-top: .3em; 
    font-family: arial
}

.fa-camera-retro {
    vertical-align: middle;
}