Part of font-awesome icon not displaying
<p>Strangely only a part of my font-awesome icon are displaying... do you have already encountered this problem?</p>

<p>I've checked everything from <a href="https://stackoverflow.com/questions/24922833/fontawesome-icons-not-showing-why">this other question</a> but nothing worked.</p>

<p>So just to clarify: there should be a newspaper next to newsletter and a clock next to "Historique".</p>

<p><a href="https://i.stack.imgur.com/AJ0DU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AJ0DU.png" alt="enter image description here"></a></p>

<p>They are exactly the same elements : </p>

<pre><code>&lt;button value="newsl"&gt;&lt;i class="fa fa-newspaper-o"&gt;&lt;/i&gt; &lt;em&gt;Recevez la newsletter&lt;/em&gt;&lt;/button&gt;
&lt;button value="favoris"&gt;&lt;i class="fa fa-heart"&gt;&lt;/i&gt; &lt;em&gt;Mes favoris&lt;/em&gt;&lt;/button&gt;
&lt;button value="historique"&gt;&lt;i class="fa fa-history"&gt;&lt;/i&gt; &lt;em&gt;Historique&lt;/em&gt;&lt;/button&gt;
</code></pre>

<p>And answer to no specific CSS style.</p>

<p>Where could the problem come from?</p>

<p><strong><a href="http://dev.agencedevoyage.com/" rel="nofollow noreferrer">Here is a link where you can see the problem</a></strong></p>

<p>From <a href="https://github.com/FortAwesome/Font-Awesome/wiki/Troubleshooting" rel="nofollow noreferrer">here</a> I assumed it could come from an older version load with the theme template I'm using So I've found older versions and deleted them then load font-awesome from the last CDN possible. No progression anyway.</p>

<p><code>&lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css"&gt;</code></p>