Q:

Weird behavior in Firefox using :after and float:right inside of a yui-purecss button

JsFiddle: http://jsfiddle.net/9opb4n03/1/
HTML:
<html lang="en">
<head>
<link rel="stylesheet" href="http://yui.yahooapis.com/pure/0.6.0/pure-min.css">
<link rel="stylesheet" href="http://yui.yahooapis.com/pure/0.6.0/grids-responsive-min.css">
</head>
<body >
      <a class="pure-button" href="#"><span>BUTTON</span></a><a class="pure-button" href="#">Button Text</a><a class="pure-button" href="#">Another Button</a>
</body>
</html>

CSS:
.pure-button {
   font-family: League Gothic;
   font-size: 18px;
   padding: 0 12px;
   color: #fff;
   border: 2px solid #fff;
   background-color: #203920;
   text-decoration: none;
   text-transform: uppercase;
   letter-spacing: 2px;
   border-radius: 0;
   margin-top:40px;
   margin-top:2rem;
   line-height: 51px;
   height:51px;
}
.pure-button:after {
   content: "\00BB";
   font-size:34px;
   font-family:Georgia, Times, "Times New Roman", Serif;
   display:block;
   float:right;
   line-height:47px;
   height: 47px;
   border-left: 2px solid #fff;
   margin-left: 17px;
   padding-left: 12px;
 }

You can see that the buttons display as expected in Chrome, IE and even Safari. The arrows display to the right of the button text.  Firefox, however, inserts a break between the button text and the :after element.   Any ideas?  (This is my first Stack Overflow submission, please let me know if I forgot to include any information.) 

A:

Remove float:right and add display:inline-block to .pure-button:after
Fiddle: http://jsfiddle.net/9opb4n03/2/

