<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="/css/bootstrap/bootstrap3.3.7.min.css">
<h2>Heart-empty Glyph</h2>
<p>Heart-empty icon: <span class="glyphicon glyphicon-heart-empty"></span></p>
<p>Heart-empty icon as a link:
<span class="glyphicon glyphicon-heart-empty"></span>
<p>Heart-empty icon on a button:
<button type="button" class="btn btn-default btn-sm">
<span class="glyphicon glyphicon-heart-empty"></span> Heart-empty
<p>Heart-empty icon on a styled link button:
<a href="#" class="btn btn-info btn-lg">