Facebook XFBML like button pop-up is being covered by other buttons

Here's the code in sharebar module for big button:

<div id="fb-root"></div>
<script>(function(d, s, id) {
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) return;
  js = d.createElement(s); js.id = id;
  js.src = "//connect.facebook.net/es_LA/all.js#xfbml=1&appId=184701754961458";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>
<div class="fb-like" data-send="true" data-layout="box_count" data-width="80" data-show-faces="false"></div>
<script type="text/javascript">
FB.Event.subscribe('edge.create',
    function(response) {
        alert('You liked the URL: ' + response);
    }
);
</script>