<p dir="auto">Challenge <a href="https://www.freecodecamp.com/challenges/steamroller" rel="nofollow">Steamroller</a> has an issue.<br>
User Agent is: <code class="notranslate">Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36</code>.<br>
Please describe how to reproduce this issue, and include links to screenshots if possible.</p>
<p dir="auto">My code:</p>
<div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="
  var resArr=[];
function steamrollArray(arr) {
  for(var i=0;i&lt;arr.length;i++)
    {
      if(Array.isArray(arr[i]))
        steamrollArray(arr[i]);
      else
        resArr.push(arr[i]);
    }

  return resArr;
}


steamrollArray([[[&quot;a&quot;]], [[&quot;b&quot;]]]);
"><pre class="notranslate">  <span class="pl-k">var</span> <span class="pl-s1">resArr</span><span class="pl-c1">=</span><span class="pl-kos">[</span><span class="pl-kos">]</span><span class="pl-kos">;</span>
<span class="pl-k">function</span> <span class="pl-en">steamrollArray</span><span class="pl-kos">(</span><span class="pl-s1">arr</span><span class="pl-kos">)</span> <span class="pl-kos">{</span>
  <span class="pl-k">for</span><span class="pl-kos">(</span><span class="pl-k">var</span> <span class="pl-s1">i</span><span class="pl-c1">=</span><span class="pl-c1">0</span><span class="pl-kos">;</span><span class="pl-s1">i</span><span class="pl-c1">&lt;</span><span class="pl-s1">arr</span><span class="pl-kos">.</span><span class="pl-c1">length</span><span class="pl-kos">;</span><span class="pl-s1">i</span><span class="pl-c1">++</span><span class="pl-kos">)</span>
    <span class="pl-kos">{</span>
      <span class="pl-k">if</span><span class="pl-kos">(</span><span class="pl-v">Array</span><span class="pl-kos">.</span><span class="pl-en">isArray</span><span class="pl-kos">(</span><span class="pl-s1">arr</span><span class="pl-kos">[</span><span class="pl-s1">i</span><span class="pl-kos">]</span><span class="pl-kos">)</span><span class="pl-kos">)</span>
        <span class="pl-en">steamrollArray</span><span class="pl-kos">(</span><span class="pl-s1">arr</span><span class="pl-kos">[</span><span class="pl-s1">i</span><span class="pl-kos">]</span><span class="pl-kos">)</span><span class="pl-kos">;</span>
      <span class="pl-k">else</span>
        <span class="pl-s1">resArr</span><span class="pl-kos">.</span><span class="pl-en">push</span><span class="pl-kos">(</span><span class="pl-s1">arr</span><span class="pl-kos">[</span><span class="pl-s1">i</span><span class="pl-kos">]</span><span class="pl-kos">)</span><span class="pl-kos">;</span>
    <span class="pl-kos">}</span>

  <span class="pl-k">return</span> <span class="pl-s1">resArr</span><span class="pl-kos">;</span>
<span class="pl-kos">}</span>


<span class="pl-en">steamrollArray</span><span class="pl-kos">(</span><span class="pl-kos">[</span><span class="pl-kos">[</span><span class="pl-kos">[</span><span class="pl-s">"a"</span><span class="pl-kos">]</span><span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-kos">[</span><span class="pl-kos">[</span><span class="pl-s">"b"</span><span class="pl-kos">]</span><span class="pl-kos">]</span><span class="pl-kos">]</span><span class="pl-kos">)</span><span class="pl-kos">;</span></pre></div>
<p dir="auto">Challenge <a href="https://www.freecodecamp.com/challenges/use-a-css-class-to-style-an-element" rel="nofollow">Use a CSS Class to Style an Element</a> has an issue.<br>
User Agent is: <code class="notranslate">Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.101 Safari/537.36</code>.<br>
Please describe how to reproduce this issue, and include links to screenshots if possible.</p>
<p dir="auto">Hello,</p>
<p dir="auto">The code preview on the right hand side of the page is completely blank and will not update when new code is typed into the editor. Also the "Run Tests" button is unresponsive.  I have tried to use three web browsers: Goggle chrome, Firefox and Safari. All three web browsers have the exact same problem so I think perhaps there is something wrong with the FCC site currently or there is something wrong on my end. Is this a common issue? Any help would be appreciated.</p>
<p dir="auto">Thank you</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/17350098/18412900/3685216c-7757-11e6-9e0a-063233bea35b.png"><img width="1648" alt="fcc problem" src="https://cloud.githubusercontent.com/assets/17350098/18412900/3685216c-7757-11e6-9e0a-063233bea35b.png" style="max-width: 100%;"></a></p>
<p dir="auto">My code:</p>
<div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="
&lt;style&gt;
  .red-text {
    color: blue;
  }
&lt;/style&gt;

&lt;h2 class=&quot;red-text&quot;&gt;CatPhotoApp&lt;/h2&gt;

&lt;p&gt;Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.&lt;/p&gt;
"><pre class="notranslate"><span class="pl-kos">&lt;</span><span class="pl-ent">style</span><span class="pl-kos">&gt;</span>
  .<span class="pl-c1">red-text</span> {
    <span class="pl-c1">color</span><span class="pl-kos">:</span> blue;
  }
<span class="pl-kos">&lt;/</span><span class="pl-ent">style</span><span class="pl-kos">&gt;</span>

<span class="pl-kos">&lt;</span><span class="pl-ent">h2</span> <span class="pl-c1">class</span>="<span class="pl-s">red-text</span>"<span class="pl-kos">&gt;</span>CatPhotoApp<span class="pl-kos">&lt;/</span><span class="pl-ent">h2</span><span class="pl-kos">&gt;</span>

<span class="pl-kos">&lt;</span><span class="pl-ent">p</span><span class="pl-kos">&gt;</span>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.<span class="pl-kos">&lt;/</span><span class="pl-ent">p</span><span class="pl-kos">&gt;</span></pre></div>