Font-Awesome/build/_includes/examples/buttons.html

<section id="buttons">
  <h2 class="page-header">Buttons</h2>
  <div class="row">
    <div class="span3">
      <p>
        <a class="btn" href="#">
          <i class="icon-repeat"></i> Reload</a>
        <a class="btn btn-success" href="#">
          <i class="icon-shopping-cart icon-large"></i> Checkout</a>
      </p>
      <p>
        <a class="btn btn-large btn-primary" href="#">
          <i class="icon-comment"></i> Comment</a>
        <a class="btn btn-small btn-info" href="#">
          <i class="icon-info-sign"></i> Info</a>
      </p>
      <p>
        <a class="btn btn-danger" href="#">
          <i class="icon-trash icon-large"></i> Delete</a>
        <a class="btn btn-small" href="#">
          <i class="icon-cog"></i> Settings</a>
      </p>
      <p>
        <a class="btn btn-large btn-danger" href="#">
          <i class="icon-flag icon-2x pull-left"></i> Font Awesome<br>Version {{ site.font_awesome.version }}</a>
      </p>
      <p>
        <a class="btn btn-primary" href="#">
          <i class="icon-refresh icon-spin"></i> Synchronizing Content...</a>
      </p>
    </div>
    <div class="span9">
      <p>
        Font Awesome icons work great in buttons. You can even combine them with larger icon styles,
        <code>pull-right</code> and <code>pull-left</code>, and <code>icon-spin</code>.
      </p>
{% highlight html %}
<a class="btn" href="#">
  <i class="icon-repeat"></i> Reload</a>
<a class="btn btn-success" href="#">
  <i class="icon-shopping-cart icon-large"></i> Checkout</a>
<a class="btn btn-large btn-primary" href="#">
  <i class="icon-comment"></i> Comment</a>
<a class="btn btn-small btn-info" href="#">
  <i class="icon-info-sign"></i> Info</a>
<a class="btn btn-danger" href="#">
  <i class="icon-trash icon-large"></i> Delete</a>
<a class="btn btn-small" href="#">
  <i class="icon-cog"></i> Settings</a>
<a class="btn btn-large btn-danger" href="#">
  <i class="icon-flag icon-2x pull-left"></i> Font Awesome<br>Version {{ site.font_awesome.version }}</a>
<a class="btn btn-primary" href="#">
  <i class="icon-refresh icon-spin"></i> Synchronizing Content...</a>
{% endhighlight %}
    </div>
  </div>
</section>