title: glyphicons button with Bootstrap 3.3.7
body: <p>I am using a current bootstrap version from the CDN. If I replace</p>
  
  <pre><code>&lt;Link rel="stylesheet" href="// netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css"&gt;
  </code></pre>
  
  <p>by</p>
  
  <pre><code>&lt;Link rel="stylesheet" href="// maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt; 
  </code></pre>
  
  <p>then the glyphicons on the buttons are no longer displayed.</p>